Ubuntu 18.04 / Dell Precision 5520 - New install, no video over Thunderbolt 3
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Last night decided to try Ubuntu 18.04, did a fresh install on my laptop (previously had kubuntu 17.10 running).
I use a setup with two external monitors- 1 HDMI and 1 with Thunderbolt3 to display port. Now, I can no longer use my monitors.
If I plug in JUST the HDMI, the hdmi monitor is detected and works.
If I plug in BOTH external monitors, NEITHER monitor is detected.
If I plug in JUST the Thunderbolt, it is not detected.
Interestingly, if they are plugged in during boot, the Ubuntu splash screen briefly appears on the Thunderbolt monitor, and disappears before the login prompt appears. This setup was working correctly on Kubuntu yesterday. I tried installing the nvidida drivers with no change, updated to the latest firmware, and am not sure what the next step should be.
The only changes I have made to the system are installing Chrome and Wavebox and updating the drivers as described... stock install from the ISO otherwise.
gnome multiple-monitors 18.04
asked May 15 at 15:10
Paul Becotte
1113
add a comment |Â
up vote
0
down vote
favorite
Last night decided to try Ubuntu 18.04, did a fresh install on my laptop (previously had kubuntu 17.10 running).
I use a setup with two external monitors- 1 HDMI and 1 with Thunderbolt3 to display port. Now, I can no longer use my monitors.
If I plug in JUST the HDMI, the hdmi monitor is detected and works.
If I plug in BOTH external monitors, NEITHER monitor is detected.
If I plug in JUST the Thunderbolt, it is not detected.
Interestingly, if they are plugged in during boot, the Ubuntu splash screen briefly appears on the Thunderbolt monitor, and disappears before the login prompt appears. This setup was working correctly on Kubuntu yesterday. I tried installing the nvidida drivers with no change, updated to the latest firmware, and am not sure what the next step should be.
The only changes I have made to the system are installing Chrome and Wavebox and updating the drivers as described... stock install from the ISO otherwise.
gnome multiple-monitors 18.04
asked May 15 at 15:10
Paul Becotte
1113
add a comment |Â
up vote
0
down vote
favorite
up vote
0
down vote
favorite
Last night decided to try Ubuntu 18.04, did a fresh install on my laptop (previously had kubuntu 17.10 running).
I use a setup with two external monitors- 1 HDMI and 1 with Thunderbolt3 to display port. Now, I can no longer use my monitors.
If I plug in JUST the HDMI, the hdmi monitor is detected and works.
If I plug in BOTH external monitors, NEITHER monitor is detected.
If I plug in JUST the Thunderbolt, it is not detected.
Interestingly, if they are plugged in during boot, the Ubuntu splash screen briefly appears on the Thunderbolt monitor, and disappears before the login prompt appears. This setup was working correctly on Kubuntu yesterday. I tried installing the nvidida drivers with no change, updated to the latest firmware, and am not sure what the next step should be.
The only changes I have made to the system are installing Chrome and Wavebox and updating the drivers as described... stock install from the ISO otherwise.
gnome multiple-monitors 18.04
asked May 15 at 15:10
Paul Becotte
1113
Last night decided to try Ubuntu 18.04, did a fresh install on my laptop (previously had kubuntu 17.10 running).
I use a setup with two external monitors- 1 HDMI and 1 with Thunderbolt3 to display port. Now, I can no longer use my monitors.
If I plug in JUST the HDMI, the hdmi monitor is detected and works.
If I plug in BOTH external monitors, NEITHER monitor is detected.
If I plug in JUST the Thunderbolt, it is not detected.
Interestingly, if they are plugged in during boot, the Ubuntu splash screen briefly appears on the Thunderbolt monitor, and disappears before the login prompt appears. This setup was working correctly on Kubuntu yesterday. I tried installing the nvidida drivers with no change, updated to the latest firmware, and am not sure what the next step should be.
The only changes I have made to the system are installing Chrome and Wavebox and updating the drivers as described... stock install from the ISO otherwise.
gnome multiple-monitors 18.04
asked May 15 at 15:10
Paul Becotte
1113
asked May 15 at 15:10
Paul Becotte
1113
asked May 15 at 15:10
Paul Becotte
1113
asked May 15 at 15:10
Paul Becotte
1113
1113
add a comment |Â
add a comment |Â
1 Answer
1
active
oldest
votes
up vote
1
down vote
Figured it out. Turned out I had MST enabled on the Thunderbolt monitor... but there was not a monitor daisy chained. When I turned it off, everything worked as expected. Yay!
answered May 15 at 16:42
Paul Becotte
1113
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
1
down vote
Figured it out. Turned out I had MST enabled on the Thunderbolt monitor... but there was not a monitor daisy chained. When I turned it off, everything worked as expected. Yay!
answered May 15 at 16:42
Paul Becotte
1113
add a comment |Â
up vote
1
down vote
Figured it out. Turned out I had MST enabled on the Thunderbolt monitor... but there was not a monitor daisy chained. When I turned it off, everything worked as expected. Yay!
answered May 15 at 16:42
Paul Becotte
1113
add a comment |Â
up vote
1
down vote
up vote
1
down vote
Figured it out. Turned out I had MST enabled on the Thunderbolt monitor... but there was not a monitor daisy chained. When I turned it off, everything worked as expected. Yay!
answered May 15 at 16:42
Paul Becotte
1113
Figured it out. Turned out I had MST enabled on the Thunderbolt monitor... but there was not a monitor daisy chained. When I turned it off, everything worked as expected. Yay!
answered May 15 at 16:42
Paul Becotte
1113
answered May 15 at 16:42
Paul Becotte
1113
answered May 15 at 16:42
Paul Becotte
1113
answered May 15 at 16:42
Paul Becotte
1113
1113
add a comment |Â
add a comment |Â
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