System with Intel wireless AC-9462 freezes unless WiFi is diabled due to missing firmware

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I have NUC 7PJYH with Intel wireless AC-9462 card. The problem is that systems randomly freezes when using WiFi. There are no freezes when wifi is disabled. I tried to use different kernels, but still the same behaviour.



I investigated dmesg when I was on kernel 4.16.12 and I found that the kernel is asking for iwlwifi-9000-pu-b0-jf-b0-35 and iwlwifi-9000-pu-b0-jf-b0-36 firmware files. I tried to find these files on wireless.wiki.kernel.org. I went through all repositories they maintain and I found only versions 34 and 38 of this firmware.



Where can I find the correct firmware for kernel 4.16? These files are not even in the official linux-firmware package tree.



EDIT:



wifi related dmesg output:



[ 3.476177] iwlwifi 0000:00:0c.0: enabling device (0000 -> 0002)

[ 3.483822] iwlwifi 0000:00:0c.0: Direct firmware load for iwlwifi-9000-pu-b0-jf-b0-36.ucode failed with error -2

[ 3.483839] iwlwifi 0000:00:0c.0: Direct firmware load for iwlwifi-9000-pu-b0-jf-b0-35.ucode failed with error -2

[ 3.497077] iwlwifi 0000:00:0c.0: loaded firmware version 34.3125811985.0 op_mode iwlmvm

[ 3.570636] iwlwifi 0000:00:0c.0: Detected Intel(R) Dual Band Wireless AC 9462, REV=0x318

[ 3.624572] iwlwifi 0000:00:0c.0: base HW address: 68:ec:c5:9c:38:3f

[ 3.685419] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'

[ 3.974259] iwlwifi 0000:00:0c.0 wlo1: renamed from wlan0

[ 4.856976] iwlwifi 0000:00:0c.0: Conflict between TLV & NVM regarding enabling LAR (TLV = enabled NVM =disabled)






share|improve this question






















  • I would like to add that the error message about missing firmware is not there with kernel 4.15 because it uses iwlwifi-9000-pu-b0-jf-b0-34 which is available in 18.04. But system hangs as I wrote in the original post. That is the reason I'm trying to upgrade kernel.
    – Vlastimil Lorenc
    May 26 at 10:32














up vote
3
down vote

favorite












I have NUC 7PJYH with Intel wireless AC-9462 card. The problem is that systems randomly freezes when using WiFi. There are no freezes when wifi is disabled. I tried to use different kernels, but still the same behaviour.



I investigated dmesg when I was on kernel 4.16.12 and I found that the kernel is asking for iwlwifi-9000-pu-b0-jf-b0-35 and iwlwifi-9000-pu-b0-jf-b0-36 firmware files. I tried to find these files on wireless.wiki.kernel.org. I went through all repositories they maintain and I found only versions 34 and 38 of this firmware.



Where can I find the correct firmware for kernel 4.16? These files are not even in the official linux-firmware package tree.



EDIT:



wifi related dmesg output:



[ 3.476177] iwlwifi 0000:00:0c.0: enabling device (0000 -> 0002)

[ 3.483822] iwlwifi 0000:00:0c.0: Direct firmware load for iwlwifi-9000-pu-b0-jf-b0-36.ucode failed with error -2

[ 3.483839] iwlwifi 0000:00:0c.0: Direct firmware load for iwlwifi-9000-pu-b0-jf-b0-35.ucode failed with error -2

[ 3.497077] iwlwifi 0000:00:0c.0: loaded firmware version 34.3125811985.0 op_mode iwlmvm

[ 3.570636] iwlwifi 0000:00:0c.0: Detected Intel(R) Dual Band Wireless AC 9462, REV=0x318

[ 3.624572] iwlwifi 0000:00:0c.0: base HW address: 68:ec:c5:9c:38:3f

[ 3.685419] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'

[ 3.974259] iwlwifi 0000:00:0c.0 wlo1: renamed from wlan0

[ 4.856976] iwlwifi 0000:00:0c.0: Conflict between TLV & NVM regarding enabling LAR (TLV = enabled NVM =disabled)






share|improve this question






















  • I would like to add that the error message about missing firmware is not there with kernel 4.15 because it uses iwlwifi-9000-pu-b0-jf-b0-34 which is available in 18.04. But system hangs as I wrote in the original post. That is the reason I'm trying to upgrade kernel.
    – Vlastimil Lorenc
    May 26 at 10:32












up vote
3
down vote

favorite









up vote
3
down vote

favorite











I have NUC 7PJYH with Intel wireless AC-9462 card. The problem is that systems randomly freezes when using WiFi. There are no freezes when wifi is disabled. I tried to use different kernels, but still the same behaviour.



I investigated dmesg when I was on kernel 4.16.12 and I found that the kernel is asking for iwlwifi-9000-pu-b0-jf-b0-35 and iwlwifi-9000-pu-b0-jf-b0-36 firmware files. I tried to find these files on wireless.wiki.kernel.org. I went through all repositories they maintain and I found only versions 34 and 38 of this firmware.



Where can I find the correct firmware for kernel 4.16? These files are not even in the official linux-firmware package tree.



EDIT:



wifi related dmesg output:



[ 3.476177] iwlwifi 0000:00:0c.0: enabling device (0000 -> 0002)

[ 3.483822] iwlwifi 0000:00:0c.0: Direct firmware load for iwlwifi-9000-pu-b0-jf-b0-36.ucode failed with error -2

[ 3.483839] iwlwifi 0000:00:0c.0: Direct firmware load for iwlwifi-9000-pu-b0-jf-b0-35.ucode failed with error -2

[ 3.497077] iwlwifi 0000:00:0c.0: loaded firmware version 34.3125811985.0 op_mode iwlmvm

[ 3.570636] iwlwifi 0000:00:0c.0: Detected Intel(R) Dual Band Wireless AC 9462, REV=0x318

[ 3.624572] iwlwifi 0000:00:0c.0: base HW address: 68:ec:c5:9c:38:3f

[ 3.685419] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'

[ 3.974259] iwlwifi 0000:00:0c.0 wlo1: renamed from wlan0

[ 4.856976] iwlwifi 0000:00:0c.0: Conflict between TLV & NVM regarding enabling LAR (TLV = enabled NVM =disabled)






share|improve this question














I have NUC 7PJYH with Intel wireless AC-9462 card. The problem is that systems randomly freezes when using WiFi. There are no freezes when wifi is disabled. I tried to use different kernels, but still the same behaviour.



I investigated dmesg when I was on kernel 4.16.12 and I found that the kernel is asking for iwlwifi-9000-pu-b0-jf-b0-35 and iwlwifi-9000-pu-b0-jf-b0-36 firmware files. I tried to find these files on wireless.wiki.kernel.org. I went through all repositories they maintain and I found only versions 34 and 38 of this firmware.



Where can I find the correct firmware for kernel 4.16? These files are not even in the official linux-firmware package tree.



EDIT:



wifi related dmesg output:



[ 3.476177] iwlwifi 0000:00:0c.0: enabling device (0000 -> 0002)

[ 3.483822] iwlwifi 0000:00:0c.0: Direct firmware load for iwlwifi-9000-pu-b0-jf-b0-36.ucode failed with error -2

[ 3.483839] iwlwifi 0000:00:0c.0: Direct firmware load for iwlwifi-9000-pu-b0-jf-b0-35.ucode failed with error -2

[ 3.497077] iwlwifi 0000:00:0c.0: loaded firmware version 34.3125811985.0 op_mode iwlmvm

[ 3.570636] iwlwifi 0000:00:0c.0: Detected Intel(R) Dual Band Wireless AC 9462, REV=0x318

[ 3.624572] iwlwifi 0000:00:0c.0: base HW address: 68:ec:c5:9c:38:3f

[ 3.685419] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'

[ 3.974259] iwlwifi 0000:00:0c.0 wlo1: renamed from wlan0

[ 4.856976] iwlwifi 0000:00:0c.0: Conflict between TLV & NVM regarding enabling LAR (TLV = enabled NVM =disabled)








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edited May 26 at 15:31









chili555

36.1k54775




36.1k54775










asked May 26 at 10:16









Vlastimil Lorenc

183




183











  • I would like to add that the error message about missing firmware is not there with kernel 4.15 because it uses iwlwifi-9000-pu-b0-jf-b0-34 which is available in 18.04. But system hangs as I wrote in the original post. That is the reason I'm trying to upgrade kernel.
    – Vlastimil Lorenc
    May 26 at 10:32
















  • I would like to add that the error message about missing firmware is not there with kernel 4.15 because it uses iwlwifi-9000-pu-b0-jf-b0-34 which is available in 18.04. But system hangs as I wrote in the original post. That is the reason I'm trying to upgrade kernel.
    – Vlastimil Lorenc
    May 26 at 10:32















I would like to add that the error message about missing firmware is not there with kernel 4.15 because it uses iwlwifi-9000-pu-b0-jf-b0-34 which is available in 18.04. But system hangs as I wrote in the original post. That is the reason I'm trying to upgrade kernel.
– Vlastimil Lorenc
May 26 at 10:32




I would like to add that the error message about missing firmware is not there with kernel 4.15 because it uses iwlwifi-9000-pu-b0-jf-b0-34 which is available in 18.04. But system hangs as I wrote in the original post. That is the reason I'm trying to upgrade kernel.
– Vlastimil Lorenc
May 26 at 10:32










1 Answer
1






active

oldest

votes

















up vote
1
down vote



accepted










I believe that the reason that you nor I can find any x.35 or x.36 firmware with a thorough web search is that they don't yet exist. The driver in question, iwlwifi, is written to look for the latest firmware version first; failing to find it, look for the next latest and so on until a suitable firmware file is found.



At the same time, the driver is written to automatically use later firmware versions as they are developed and included in newer versions of linux-firmware. In other words, when x.35 is written and released, the driver iwlwifi will find and use it without the necessity of a newer version of the driver. This is quite common in Intel and some other wireless drivers.



I think there is some reason other than firmware that causes your system to hang when using wireless. I invite you to ask a new open-ended question and include: dmesg | grep -e iwl -e wlp.



EDIT: We see this clue in your dmesg:




Conflict between TLV & NVM regarding enabling LAR (TLV = enabled NVM =disabled)




I suggested that you try a driver parameter:



sudo modprobe -r iwlwifi && sudo modprobe iwlwifi lar_disable=Y


It seems to have solved the hang issue so I suggest that you make it permanent:



sudo -i
echo "options iwlwifi lar_disable=Y" >> /etc/modprobe.d/iwlwifi.conf
exit


You should be all set.






share|improve this answer






















  • Thank you for your answer. I saw in the log that x.34 was used instead, so I'm using still the same firmware with different kernels. What is confusing is that I was able to find x.38 of this firmware; but as you wrote, x.35 and x.36 have not been released yet.
    – Vlastimil Lorenc
    May 26 at 14:52










  • I believe, based on using and studying Intel wireless devices exclusively for about 15 years, that the very high firmware numbers like x.38 that are not even referenced in the driver; e.g. modinfo iwlwifi | grep firm are experimental, bleeding edge firmware versions.
    – chili555
    May 26 at 15:06










  • Thanks for explanation. I added my dmesg output into the original question. So I will wait for new kernel/firmware because I believe there must be some bug. What is weird is that system hangs only when streaming video e.g. from youtube. My first guess was GPU issue, but as I wrote, it works perfectly on wired network.
    – Vlastimil Lorenc
    May 26 at 15:18







  • 1




    Please try: sudo modprobe -r iwlwifi followed by: sudo modprobe iwlwifi lar_disable=Y and test. If it helps, I'll add it to my answer, making it persistent.
    – chili555
    May 26 at 15:37






  • 1




    Testing it 10 minutes and so far so good. I usually saw system freeze in less than one minute when streaming video. It seems you solved my problem! How come this helped?
    – Vlastimil Lorenc
    May 26 at 15:52










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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes








up vote
1
down vote



accepted










I believe that the reason that you nor I can find any x.35 or x.36 firmware with a thorough web search is that they don't yet exist. The driver in question, iwlwifi, is written to look for the latest firmware version first; failing to find it, look for the next latest and so on until a suitable firmware file is found.



At the same time, the driver is written to automatically use later firmware versions as they are developed and included in newer versions of linux-firmware. In other words, when x.35 is written and released, the driver iwlwifi will find and use it without the necessity of a newer version of the driver. This is quite common in Intel and some other wireless drivers.



I think there is some reason other than firmware that causes your system to hang when using wireless. I invite you to ask a new open-ended question and include: dmesg | grep -e iwl -e wlp.



EDIT: We see this clue in your dmesg:




Conflict between TLV & NVM regarding enabling LAR (TLV = enabled NVM =disabled)




I suggested that you try a driver parameter:



sudo modprobe -r iwlwifi && sudo modprobe iwlwifi lar_disable=Y


It seems to have solved the hang issue so I suggest that you make it permanent:



sudo -i
echo "options iwlwifi lar_disable=Y" >> /etc/modprobe.d/iwlwifi.conf
exit


You should be all set.






share|improve this answer






















  • Thank you for your answer. I saw in the log that x.34 was used instead, so I'm using still the same firmware with different kernels. What is confusing is that I was able to find x.38 of this firmware; but as you wrote, x.35 and x.36 have not been released yet.
    – Vlastimil Lorenc
    May 26 at 14:52










  • I believe, based on using and studying Intel wireless devices exclusively for about 15 years, that the very high firmware numbers like x.38 that are not even referenced in the driver; e.g. modinfo iwlwifi | grep firm are experimental, bleeding edge firmware versions.
    – chili555
    May 26 at 15:06










  • Thanks for explanation. I added my dmesg output into the original question. So I will wait for new kernel/firmware because I believe there must be some bug. What is weird is that system hangs only when streaming video e.g. from youtube. My first guess was GPU issue, but as I wrote, it works perfectly on wired network.
    – Vlastimil Lorenc
    May 26 at 15:18







  • 1




    Please try: sudo modprobe -r iwlwifi followed by: sudo modprobe iwlwifi lar_disable=Y and test. If it helps, I'll add it to my answer, making it persistent.
    – chili555
    May 26 at 15:37






  • 1




    Testing it 10 minutes and so far so good. I usually saw system freeze in less than one minute when streaming video. It seems you solved my problem! How come this helped?
    – Vlastimil Lorenc
    May 26 at 15:52














up vote
1
down vote



accepted










I believe that the reason that you nor I can find any x.35 or x.36 firmware with a thorough web search is that they don't yet exist. The driver in question, iwlwifi, is written to look for the latest firmware version first; failing to find it, look for the next latest and so on until a suitable firmware file is found.



At the same time, the driver is written to automatically use later firmware versions as they are developed and included in newer versions of linux-firmware. In other words, when x.35 is written and released, the driver iwlwifi will find and use it without the necessity of a newer version of the driver. This is quite common in Intel and some other wireless drivers.



I think there is some reason other than firmware that causes your system to hang when using wireless. I invite you to ask a new open-ended question and include: dmesg | grep -e iwl -e wlp.



EDIT: We see this clue in your dmesg:




Conflict between TLV & NVM regarding enabling LAR (TLV = enabled NVM =disabled)




I suggested that you try a driver parameter:



sudo modprobe -r iwlwifi && sudo modprobe iwlwifi lar_disable=Y


It seems to have solved the hang issue so I suggest that you make it permanent:



sudo -i
echo "options iwlwifi lar_disable=Y" >> /etc/modprobe.d/iwlwifi.conf
exit


You should be all set.






share|improve this answer






















  • Thank you for your answer. I saw in the log that x.34 was used instead, so I'm using still the same firmware with different kernels. What is confusing is that I was able to find x.38 of this firmware; but as you wrote, x.35 and x.36 have not been released yet.
    – Vlastimil Lorenc
    May 26 at 14:52










  • I believe, based on using and studying Intel wireless devices exclusively for about 15 years, that the very high firmware numbers like x.38 that are not even referenced in the driver; e.g. modinfo iwlwifi | grep firm are experimental, bleeding edge firmware versions.
    – chili555
    May 26 at 15:06










  • Thanks for explanation. I added my dmesg output into the original question. So I will wait for new kernel/firmware because I believe there must be some bug. What is weird is that system hangs only when streaming video e.g. from youtube. My first guess was GPU issue, but as I wrote, it works perfectly on wired network.
    – Vlastimil Lorenc
    May 26 at 15:18







  • 1




    Please try: sudo modprobe -r iwlwifi followed by: sudo modprobe iwlwifi lar_disable=Y and test. If it helps, I'll add it to my answer, making it persistent.
    – chili555
    May 26 at 15:37






  • 1




    Testing it 10 minutes and so far so good. I usually saw system freeze in less than one minute when streaming video. It seems you solved my problem! How come this helped?
    – Vlastimil Lorenc
    May 26 at 15:52












up vote
1
down vote



accepted







up vote
1
down vote



accepted






I believe that the reason that you nor I can find any x.35 or x.36 firmware with a thorough web search is that they don't yet exist. The driver in question, iwlwifi, is written to look for the latest firmware version first; failing to find it, look for the next latest and so on until a suitable firmware file is found.



At the same time, the driver is written to automatically use later firmware versions as they are developed and included in newer versions of linux-firmware. In other words, when x.35 is written and released, the driver iwlwifi will find and use it without the necessity of a newer version of the driver. This is quite common in Intel and some other wireless drivers.



I think there is some reason other than firmware that causes your system to hang when using wireless. I invite you to ask a new open-ended question and include: dmesg | grep -e iwl -e wlp.



EDIT: We see this clue in your dmesg:




Conflict between TLV & NVM regarding enabling LAR (TLV = enabled NVM =disabled)




I suggested that you try a driver parameter:



sudo modprobe -r iwlwifi && sudo modprobe iwlwifi lar_disable=Y


It seems to have solved the hang issue so I suggest that you make it permanent:



sudo -i
echo "options iwlwifi lar_disable=Y" >> /etc/modprobe.d/iwlwifi.conf
exit


You should be all set.






share|improve this answer














I believe that the reason that you nor I can find any x.35 or x.36 firmware with a thorough web search is that they don't yet exist. The driver in question, iwlwifi, is written to look for the latest firmware version first; failing to find it, look for the next latest and so on until a suitable firmware file is found.



At the same time, the driver is written to automatically use later firmware versions as they are developed and included in newer versions of linux-firmware. In other words, when x.35 is written and released, the driver iwlwifi will find and use it without the necessity of a newer version of the driver. This is quite common in Intel and some other wireless drivers.



I think there is some reason other than firmware that causes your system to hang when using wireless. I invite you to ask a new open-ended question and include: dmesg | grep -e iwl -e wlp.



EDIT: We see this clue in your dmesg:




Conflict between TLV & NVM regarding enabling LAR (TLV = enabled NVM =disabled)




I suggested that you try a driver parameter:



sudo modprobe -r iwlwifi && sudo modprobe iwlwifi lar_disable=Y


It seems to have solved the hang issue so I suggest that you make it permanent:



sudo -i
echo "options iwlwifi lar_disable=Y" >> /etc/modprobe.d/iwlwifi.conf
exit


You should be all set.







share|improve this answer














share|improve this answer



share|improve this answer








edited May 26 at 16:21

























answered May 26 at 14:44









chili555

36.1k54775




36.1k54775











  • Thank you for your answer. I saw in the log that x.34 was used instead, so I'm using still the same firmware with different kernels. What is confusing is that I was able to find x.38 of this firmware; but as you wrote, x.35 and x.36 have not been released yet.
    – Vlastimil Lorenc
    May 26 at 14:52










  • I believe, based on using and studying Intel wireless devices exclusively for about 15 years, that the very high firmware numbers like x.38 that are not even referenced in the driver; e.g. modinfo iwlwifi | grep firm are experimental, bleeding edge firmware versions.
    – chili555
    May 26 at 15:06










  • Thanks for explanation. I added my dmesg output into the original question. So I will wait for new kernel/firmware because I believe there must be some bug. What is weird is that system hangs only when streaming video e.g. from youtube. My first guess was GPU issue, but as I wrote, it works perfectly on wired network.
    – Vlastimil Lorenc
    May 26 at 15:18







  • 1




    Please try: sudo modprobe -r iwlwifi followed by: sudo modprobe iwlwifi lar_disable=Y and test. If it helps, I'll add it to my answer, making it persistent.
    – chili555
    May 26 at 15:37






  • 1




    Testing it 10 minutes and so far so good. I usually saw system freeze in less than one minute when streaming video. It seems you solved my problem! How come this helped?
    – Vlastimil Lorenc
    May 26 at 15:52
















  • Thank you for your answer. I saw in the log that x.34 was used instead, so I'm using still the same firmware with different kernels. What is confusing is that I was able to find x.38 of this firmware; but as you wrote, x.35 and x.36 have not been released yet.
    – Vlastimil Lorenc
    May 26 at 14:52










  • I believe, based on using and studying Intel wireless devices exclusively for about 15 years, that the very high firmware numbers like x.38 that are not even referenced in the driver; e.g. modinfo iwlwifi | grep firm are experimental, bleeding edge firmware versions.
    – chili555
    May 26 at 15:06










  • Thanks for explanation. I added my dmesg output into the original question. So I will wait for new kernel/firmware because I believe there must be some bug. What is weird is that system hangs only when streaming video e.g. from youtube. My first guess was GPU issue, but as I wrote, it works perfectly on wired network.
    – Vlastimil Lorenc
    May 26 at 15:18







  • 1




    Please try: sudo modprobe -r iwlwifi followed by: sudo modprobe iwlwifi lar_disable=Y and test. If it helps, I'll add it to my answer, making it persistent.
    – chili555
    May 26 at 15:37






  • 1




    Testing it 10 minutes and so far so good. I usually saw system freeze in less than one minute when streaming video. It seems you solved my problem! How come this helped?
    – Vlastimil Lorenc
    May 26 at 15:52















Thank you for your answer. I saw in the log that x.34 was used instead, so I'm using still the same firmware with different kernels. What is confusing is that I was able to find x.38 of this firmware; but as you wrote, x.35 and x.36 have not been released yet.
– Vlastimil Lorenc
May 26 at 14:52




Thank you for your answer. I saw in the log that x.34 was used instead, so I'm using still the same firmware with different kernels. What is confusing is that I was able to find x.38 of this firmware; but as you wrote, x.35 and x.36 have not been released yet.
– Vlastimil Lorenc
May 26 at 14:52












I believe, based on using and studying Intel wireless devices exclusively for about 15 years, that the very high firmware numbers like x.38 that are not even referenced in the driver; e.g. modinfo iwlwifi | grep firm are experimental, bleeding edge firmware versions.
– chili555
May 26 at 15:06




I believe, based on using and studying Intel wireless devices exclusively for about 15 years, that the very high firmware numbers like x.38 that are not even referenced in the driver; e.g. modinfo iwlwifi | grep firm are experimental, bleeding edge firmware versions.
– chili555
May 26 at 15:06












Thanks for explanation. I added my dmesg output into the original question. So I will wait for new kernel/firmware because I believe there must be some bug. What is weird is that system hangs only when streaming video e.g. from youtube. My first guess was GPU issue, but as I wrote, it works perfectly on wired network.
– Vlastimil Lorenc
May 26 at 15:18





Thanks for explanation. I added my dmesg output into the original question. So I will wait for new kernel/firmware because I believe there must be some bug. What is weird is that system hangs only when streaming video e.g. from youtube. My first guess was GPU issue, but as I wrote, it works perfectly on wired network.
– Vlastimil Lorenc
May 26 at 15:18





1




1




Please try: sudo modprobe -r iwlwifi followed by: sudo modprobe iwlwifi lar_disable=Y and test. If it helps, I'll add it to my answer, making it persistent.
– chili555
May 26 at 15:37




Please try: sudo modprobe -r iwlwifi followed by: sudo modprobe iwlwifi lar_disable=Y and test. If it helps, I'll add it to my answer, making it persistent.
– chili555
May 26 at 15:37




1




1




Testing it 10 minutes and so far so good. I usually saw system freeze in less than one minute when streaming video. It seems you solved my problem! How come this helped?
– Vlastimil Lorenc
May 26 at 15:52




Testing it 10 minutes and so far so good. I usually saw system freeze in less than one minute when streaming video. It seems you solved my problem! How come this helped?
– Vlastimil Lorenc
May 26 at 15:52












 

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