[Desktop-packages] [Bug 1920067] Re: Xorg with EVDI can't start with Mesa 21.0
This https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1931547 is fixing that bug. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1920067 Title: Xorg with EVDI can't start with Mesa 21.0 Status in mesa package in Ubuntu: New Status in xorg-server package in Ubuntu: New Bug description: As I indicated in a bug report I filed earlier today, https://bugs.launchpad.net/ubuntu/+source/evdi/+bug/1920059, evdi-dkms can no longer compile the evdi kernel module with the 5.11 kernel. So, to work around this, I need to keep using the 5.10 kernel instead. But I can't, because when I boot with the 5.10 kernel this is what shows up in /var/log/Xorg.0.log when gdm3 tries to start up the login screen (note: I have an NVIDIA graphics card, which is why (I believe) Wayland isn't being used here): [ 857.957] (EE) modeset(G0): drmSetMaster failed: Device or resource busy [ 857.957] (EE) Fatal server error: [ 857.957] (EE) AddScreen/ScreenInit failed for gpu driver 0 -1 [ 857.957] (EE) [ 857.957] (EE) Please consult the The X.Org Foundation support at http://wiki.x.org for help. [ 857.957] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information. [ 857.957] (EE) [ 858.144] (EE) Server terminated with error (1). Closing log file. This is probably not what you will see in the Xorg.0.log (if any) attached automatically to this bug because I've completely wiped the evdi kernel module from my system since that was the only way I could get a display manager up so I could use ubuntu-bug to submit this bug. Here's what I updated today: 2021-03-18 15:03:26 upgrade sysvinit-utils:amd64 2.96-5ubuntu1 2.96-6ubuntu1 2021-03-18 15:03:27 upgrade cron:amd64 3.0pl1-136ubuntu1 3.0pl1-136ubuntu2 2021-03-18 15:03:28 upgrade gpg-wks-client:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:28 upgrade dirmngr:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:29 upgrade gpg-wks-server:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:29 upgrade gnupg-utils:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:29 upgrade gpg-agent:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:30 upgrade gpg:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:30 upgrade gpgconf:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:30 upgrade gnupg-l10n:all 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:31 upgrade gnupg:all 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:31 upgrade gpgsm:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:31 upgrade gpgv:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:32 upgrade libjs-sphinxdoc:all 3.5.1-2 3.5.2-1 2021-03-18 15:03:33 upgrade libnfsidmap2:amd64 0.25-5.1ubuntu2 0.25-6 2021-03-18 15:03:33 install linux-modules-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:35 install linux-image-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:36 install linux-modules-extra-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:40 upgrade linux-generic:amd64 5.10.0.14.16 5.11.0.11.12 2021-03-18 15:03:40 upgrade linux-image-generic:amd64 5.10.0.14.16 5.11.0.11.12 2021-03-18 15:03:41 install linux-headers-5.11.0-11:all 5.11.0-11.12 2021-03-18 15:03:44 install linux-headers-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:47 upgrade linux-headers-generic:amd64 5.10.0.14.16 5.11.0.11.12 2021-03-18 15:03:47 upgrade linux-libc-dev:amd64 5.10.0-14.15 5.11.0-11.12 2021-03-18 15:03:48 upgrade slack-desktop:amd64 4.13.0 4.14.0 2021-03-18 15:03:52 upgrade xwayland:amd64 2:1.20.10-3ubuntu3 2:21.0.99.902-0ubuntu1 2021-03-18 15:56:42 upgrade at:amd64 3.1.23-1.1ubuntu2 3.1.23-1.1ubuntu3 At first glance I don't understand how any of these could be causing this behavior. Potentially relevant: I had to recompile and reinstall the evdi kernel module while booted into 5.10 because when I install the 5.11 kernel dkms removed the module from 5.10 and then failed to rebuild it because the 5.11 build failed (or something I don't really understand why dkms does what it does *sigh*). I don't see how that should matter because the recompiled version of the module should have been identical, but *shrug*. As noted above, when I remove the evdi kernel modules from /lib/modules and reboot with 5.10 the problem goes away, so this does appear to be an evdi issue. In short: despite the fact that it's not clear how upgrading any of the modules listed above would cause evdi that used to work to suddenly stop working, that appears to be the case. Any advice would be appreciated because now I can't use the displays connected to my DisplayLink hub with either 5.10 or 5.11 kernels, despite the fact that they worked with the 5.10 kernel before today. Please let me kn
[Desktop-packages] [Bug 1920067] Re: Xorg with EVDI can't start with Mesa 21.0
I performed the splash -> nosplash test described above; it made no difference. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1920067 Title: Xorg with EVDI can't start with Mesa 21.0 Status in mesa package in Ubuntu: New Status in xorg-server package in Ubuntu: New Bug description: As I indicated in a bug report I filed earlier today, https://bugs.launchpad.net/ubuntu/+source/evdi/+bug/1920059, evdi-dkms can no longer compile the evdi kernel module with the 5.11 kernel. So, to work around this, I need to keep using the 5.10 kernel instead. But I can't, because when I boot with the 5.10 kernel this is what shows up in /var/log/Xorg.0.log when gdm3 tries to start up the login screen (note: I have an NVIDIA graphics card, which is why (I believe) Wayland isn't being used here): [ 857.957] (EE) modeset(G0): drmSetMaster failed: Device or resource busy [ 857.957] (EE) Fatal server error: [ 857.957] (EE) AddScreen/ScreenInit failed for gpu driver 0 -1 [ 857.957] (EE) [ 857.957] (EE) Please consult the The X.Org Foundation support at http://wiki.x.org for help. [ 857.957] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information. [ 857.957] (EE) [ 858.144] (EE) Server terminated with error (1). Closing log file. This is probably not what you will see in the Xorg.0.log (if any) attached automatically to this bug because I've completely wiped the evdi kernel module from my system since that was the only way I could get a display manager up so I could use ubuntu-bug to submit this bug. Here's what I updated today: 2021-03-18 15:03:26 upgrade sysvinit-utils:amd64 2.96-5ubuntu1 2.96-6ubuntu1 2021-03-18 15:03:27 upgrade cron:amd64 3.0pl1-136ubuntu1 3.0pl1-136ubuntu2 2021-03-18 15:03:28 upgrade gpg-wks-client:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:28 upgrade dirmngr:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:29 upgrade gpg-wks-server:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:29 upgrade gnupg-utils:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:29 upgrade gpg-agent:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:30 upgrade gpg:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:30 upgrade gpgconf:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:30 upgrade gnupg-l10n:all 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:31 upgrade gnupg:all 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:31 upgrade gpgsm:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:31 upgrade gpgv:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:32 upgrade libjs-sphinxdoc:all 3.5.1-2 3.5.2-1 2021-03-18 15:03:33 upgrade libnfsidmap2:amd64 0.25-5.1ubuntu2 0.25-6 2021-03-18 15:03:33 install linux-modules-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:35 install linux-image-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:36 install linux-modules-extra-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:40 upgrade linux-generic:amd64 5.10.0.14.16 5.11.0.11.12 2021-03-18 15:03:40 upgrade linux-image-generic:amd64 5.10.0.14.16 5.11.0.11.12 2021-03-18 15:03:41 install linux-headers-5.11.0-11:all 5.11.0-11.12 2021-03-18 15:03:44 install linux-headers-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:47 upgrade linux-headers-generic:amd64 5.10.0.14.16 5.11.0.11.12 2021-03-18 15:03:47 upgrade linux-libc-dev:amd64 5.10.0-14.15 5.11.0-11.12 2021-03-18 15:03:48 upgrade slack-desktop:amd64 4.13.0 4.14.0 2021-03-18 15:03:52 upgrade xwayland:amd64 2:1.20.10-3ubuntu3 2:21.0.99.902-0ubuntu1 2021-03-18 15:56:42 upgrade at:amd64 3.1.23-1.1ubuntu2 3.1.23-1.1ubuntu3 At first glance I don't understand how any of these could be causing this behavior. Potentially relevant: I had to recompile and reinstall the evdi kernel module while booted into 5.10 because when I install the 5.11 kernel dkms removed the module from 5.10 and then failed to rebuild it because the 5.11 build failed (or something I don't really understand why dkms does what it does *sigh*). I don't see how that should matter because the recompiled version of the module should have been identical, but *shrug*. As noted above, when I remove the evdi kernel modules from /lib/modules and reboot with 5.10 the problem goes away, so this does appear to be an evdi issue. In short: despite the fact that it's not clear how upgrading any of the modules listed above would cause evdi that used to work to suddenly stop working, that appears to be the case. Any advice would be appreciated because now I can't use the displays connected to my DisplayLink hub with either 5.10 or 5.11 kernels, despite the fact that they worked with the 5.10 kernel before today. Please let me know if there'
[Desktop-packages] [Bug 1920067] Re: Xorg with EVDI can't start with Mesa 21.0
Yeah I wrote that before your Mesa findings :) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1920067 Title: Xorg with EVDI can't start with Mesa 21.0 Status in mesa package in Ubuntu: New Status in xorg-server package in Ubuntu: New Bug description: As I indicated in a bug report I filed earlier today, https://bugs.launchpad.net/ubuntu/+source/evdi/+bug/1920059, evdi-dkms can no longer compile the evdi kernel module with the 5.11 kernel. So, to work around this, I need to keep using the 5.10 kernel instead. But I can't, because when I boot with the 5.10 kernel this is what shows up in /var/log/Xorg.0.log when gdm3 tries to start up the login screen (note: I have an NVIDIA graphics card, which is why (I believe) Wayland isn't being used here): [ 857.957] (EE) modeset(G0): drmSetMaster failed: Device or resource busy [ 857.957] (EE) Fatal server error: [ 857.957] (EE) AddScreen/ScreenInit failed for gpu driver 0 -1 [ 857.957] (EE) [ 857.957] (EE) Please consult the The X.Org Foundation support at http://wiki.x.org for help. [ 857.957] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information. [ 857.957] (EE) [ 858.144] (EE) Server terminated with error (1). Closing log file. This is probably not what you will see in the Xorg.0.log (if any) attached automatically to this bug because I've completely wiped the evdi kernel module from my system since that was the only way I could get a display manager up so I could use ubuntu-bug to submit this bug. Here's what I updated today: 2021-03-18 15:03:26 upgrade sysvinit-utils:amd64 2.96-5ubuntu1 2.96-6ubuntu1 2021-03-18 15:03:27 upgrade cron:amd64 3.0pl1-136ubuntu1 3.0pl1-136ubuntu2 2021-03-18 15:03:28 upgrade gpg-wks-client:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:28 upgrade dirmngr:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:29 upgrade gpg-wks-server:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:29 upgrade gnupg-utils:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:29 upgrade gpg-agent:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:30 upgrade gpg:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:30 upgrade gpgconf:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:30 upgrade gnupg-l10n:all 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:31 upgrade gnupg:all 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:31 upgrade gpgsm:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:31 upgrade gpgv:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:32 upgrade libjs-sphinxdoc:all 3.5.1-2 3.5.2-1 2021-03-18 15:03:33 upgrade libnfsidmap2:amd64 0.25-5.1ubuntu2 0.25-6 2021-03-18 15:03:33 install linux-modules-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:35 install linux-image-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:36 install linux-modules-extra-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:40 upgrade linux-generic:amd64 5.10.0.14.16 5.11.0.11.12 2021-03-18 15:03:40 upgrade linux-image-generic:amd64 5.10.0.14.16 5.11.0.11.12 2021-03-18 15:03:41 install linux-headers-5.11.0-11:all 5.11.0-11.12 2021-03-18 15:03:44 install linux-headers-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:47 upgrade linux-headers-generic:amd64 5.10.0.14.16 5.11.0.11.12 2021-03-18 15:03:47 upgrade linux-libc-dev:amd64 5.10.0-14.15 5.11.0-11.12 2021-03-18 15:03:48 upgrade slack-desktop:amd64 4.13.0 4.14.0 2021-03-18 15:03:52 upgrade xwayland:amd64 2:1.20.10-3ubuntu3 2:21.0.99.902-0ubuntu1 2021-03-18 15:56:42 upgrade at:amd64 3.1.23-1.1ubuntu2 3.1.23-1.1ubuntu3 At first glance I don't understand how any of these could be causing this behavior. Potentially relevant: I had to recompile and reinstall the evdi kernel module while booted into 5.10 because when I install the 5.11 kernel dkms removed the module from 5.10 and then failed to rebuild it because the 5.11 build failed (or something I don't really understand why dkms does what it does *sigh*). I don't see how that should matter because the recompiled version of the module should have been identical, but *shrug*. As noted above, when I remove the evdi kernel modules from /lib/modules and reboot with 5.10 the problem goes away, so this does appear to be an evdi issue. In short: despite the fact that it's not clear how upgrading any of the modules listed above would cause evdi that used to work to suddenly stop working, that appears to be the case. Any advice would be appreciated because now I can't use the displays connected to my DisplayLink hub with either 5.10 or 5.11 kernels, despite the fact that they worked with the 5.10 kernel before today. Please let me know if there's any other info you need here.
[Desktop-packages] [Bug 1920067] Re: Xorg with EVDI can't start with Mesa 21.0
For those of you who landed here looking for how to use DisplayLink in Hirsute, I wrote up a workaround here: https://blog.kamens.us/2021/03/19 /update-on-using-displaylink-with-ubuntu-21-04-hirsute-hippo/ -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1920067 Title: Xorg with EVDI can't start with Mesa 21.0 Status in mesa package in Ubuntu: New Status in xorg-server package in Ubuntu: New Bug description: As I indicated in a bug report I filed earlier today, https://bugs.launchpad.net/ubuntu/+source/evdi/+bug/1920059, evdi-dkms can no longer compile the evdi kernel module with the 5.11 kernel. So, to work around this, I need to keep using the 5.10 kernel instead. But I can't, because when I boot with the 5.10 kernel this is what shows up in /var/log/Xorg.0.log when gdm3 tries to start up the login screen (note: I have an NVIDIA graphics card, which is why (I believe) Wayland isn't being used here): [ 857.957] (EE) modeset(G0): drmSetMaster failed: Device or resource busy [ 857.957] (EE) Fatal server error: [ 857.957] (EE) AddScreen/ScreenInit failed for gpu driver 0 -1 [ 857.957] (EE) [ 857.957] (EE) Please consult the The X.Org Foundation support at http://wiki.x.org for help. [ 857.957] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information. [ 857.957] (EE) [ 858.144] (EE) Server terminated with error (1). Closing log file. This is probably not what you will see in the Xorg.0.log (if any) attached automatically to this bug because I've completely wiped the evdi kernel module from my system since that was the only way I could get a display manager up so I could use ubuntu-bug to submit this bug. Here's what I updated today: 2021-03-18 15:03:26 upgrade sysvinit-utils:amd64 2.96-5ubuntu1 2.96-6ubuntu1 2021-03-18 15:03:27 upgrade cron:amd64 3.0pl1-136ubuntu1 3.0pl1-136ubuntu2 2021-03-18 15:03:28 upgrade gpg-wks-client:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:28 upgrade dirmngr:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:29 upgrade gpg-wks-server:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:29 upgrade gnupg-utils:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:29 upgrade gpg-agent:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:30 upgrade gpg:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:30 upgrade gpgconf:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:30 upgrade gnupg-l10n:all 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:31 upgrade gnupg:all 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:31 upgrade gpgsm:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:31 upgrade gpgv:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:32 upgrade libjs-sphinxdoc:all 3.5.1-2 3.5.2-1 2021-03-18 15:03:33 upgrade libnfsidmap2:amd64 0.25-5.1ubuntu2 0.25-6 2021-03-18 15:03:33 install linux-modules-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:35 install linux-image-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:36 install linux-modules-extra-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:40 upgrade linux-generic:amd64 5.10.0.14.16 5.11.0.11.12 2021-03-18 15:03:40 upgrade linux-image-generic:amd64 5.10.0.14.16 5.11.0.11.12 2021-03-18 15:03:41 install linux-headers-5.11.0-11:all 5.11.0-11.12 2021-03-18 15:03:44 install linux-headers-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:47 upgrade linux-headers-generic:amd64 5.10.0.14.16 5.11.0.11.12 2021-03-18 15:03:47 upgrade linux-libc-dev:amd64 5.10.0-14.15 5.11.0-11.12 2021-03-18 15:03:48 upgrade slack-desktop:amd64 4.13.0 4.14.0 2021-03-18 15:03:52 upgrade xwayland:amd64 2:1.20.10-3ubuntu3 2:21.0.99.902-0ubuntu1 2021-03-18 15:56:42 upgrade at:amd64 3.1.23-1.1ubuntu2 3.1.23-1.1ubuntu3 At first glance I don't understand how any of these could be causing this behavior. Potentially relevant: I had to recompile and reinstall the evdi kernel module while booted into 5.10 because when I install the 5.11 kernel dkms removed the module from 5.10 and then failed to rebuild it because the 5.11 build failed (or something I don't really understand why dkms does what it does *sigh*). I don't see how that should matter because the recompiled version of the module should have been identical, but *shrug*. As noted above, when I remove the evdi kernel modules from /lib/modules and reboot with 5.10 the problem goes away, so this does appear to be an evdi issue. In short: despite the fact that it's not clear how upgrading any of the modules listed above would cause evdi that used to work to suddenly stop working, that appears to be the case. Any advice would be appreciated because now I can't use the displays connected to my DisplayLink hub with eithe
[Desktop-packages] [Bug 1920067] Re: Xorg with EVDI can't start with Mesa 21.0
*** This bug is a duplicate of bug 1931547 *** https://bugs.launchpad.net/bugs/1931547 ** This bug has been marked a duplicate of bug 1931547 DisplayLink displays are black after Mesa update -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1920067 Title: Xorg with EVDI can't start with Mesa 21.0 Status in mesa package in Ubuntu: New Status in xorg-server package in Ubuntu: New Bug description: As I indicated in a bug report I filed earlier today, https://bugs.launchpad.net/ubuntu/+source/evdi/+bug/1920059, evdi-dkms can no longer compile the evdi kernel module with the 5.11 kernel. So, to work around this, I need to keep using the 5.10 kernel instead. But I can't, because when I boot with the 5.10 kernel this is what shows up in /var/log/Xorg.0.log when gdm3 tries to start up the login screen (note: I have an NVIDIA graphics card, which is why (I believe) Wayland isn't being used here): [ 857.957] (EE) modeset(G0): drmSetMaster failed: Device or resource busy [ 857.957] (EE) Fatal server error: [ 857.957] (EE) AddScreen/ScreenInit failed for gpu driver 0 -1 [ 857.957] (EE) [ 857.957] (EE) Please consult the The X.Org Foundation support at http://wiki.x.org for help. [ 857.957] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information. [ 857.957] (EE) [ 858.144] (EE) Server terminated with error (1). Closing log file. This is probably not what you will see in the Xorg.0.log (if any) attached automatically to this bug because I've completely wiped the evdi kernel module from my system since that was the only way I could get a display manager up so I could use ubuntu-bug to submit this bug. Here's what I updated today: 2021-03-18 15:03:26 upgrade sysvinit-utils:amd64 2.96-5ubuntu1 2.96-6ubuntu1 2021-03-18 15:03:27 upgrade cron:amd64 3.0pl1-136ubuntu1 3.0pl1-136ubuntu2 2021-03-18 15:03:28 upgrade gpg-wks-client:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:28 upgrade dirmngr:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:29 upgrade gpg-wks-server:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:29 upgrade gnupg-utils:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:29 upgrade gpg-agent:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:30 upgrade gpg:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:30 upgrade gpgconf:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:30 upgrade gnupg-l10n:all 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:31 upgrade gnupg:all 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:31 upgrade gpgsm:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:31 upgrade gpgv:amd64 2.2.20-1ubuntu2 2.2.20-1ubuntu3 2021-03-18 15:03:32 upgrade libjs-sphinxdoc:all 3.5.1-2 3.5.2-1 2021-03-18 15:03:33 upgrade libnfsidmap2:amd64 0.25-5.1ubuntu2 0.25-6 2021-03-18 15:03:33 install linux-modules-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:35 install linux-image-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:36 install linux-modules-extra-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:40 upgrade linux-generic:amd64 5.10.0.14.16 5.11.0.11.12 2021-03-18 15:03:40 upgrade linux-image-generic:amd64 5.10.0.14.16 5.11.0.11.12 2021-03-18 15:03:41 install linux-headers-5.11.0-11:all 5.11.0-11.12 2021-03-18 15:03:44 install linux-headers-5.11.0-11-generic:amd64 5.11.0-11.12 2021-03-18 15:03:47 upgrade linux-headers-generic:amd64 5.10.0.14.16 5.11.0.11.12 2021-03-18 15:03:47 upgrade linux-libc-dev:amd64 5.10.0-14.15 5.11.0-11.12 2021-03-18 15:03:48 upgrade slack-desktop:amd64 4.13.0 4.14.0 2021-03-18 15:03:52 upgrade xwayland:amd64 2:1.20.10-3ubuntu3 2:21.0.99.902-0ubuntu1 2021-03-18 15:56:42 upgrade at:amd64 3.1.23-1.1ubuntu2 3.1.23-1.1ubuntu3 At first glance I don't understand how any of these could be causing this behavior. Potentially relevant: I had to recompile and reinstall the evdi kernel module while booted into 5.10 because when I install the 5.11 kernel dkms removed the module from 5.10 and then failed to rebuild it because the 5.11 build failed (or something I don't really understand why dkms does what it does *sigh*). I don't see how that should matter because the recompiled version of the module should have been identical, but *shrug*. As noted above, when I remove the evdi kernel modules from /lib/modules and reboot with 5.10 the problem goes away, so this does appear to be an evdi issue. In short: despite the fact that it's not clear how upgrading any of the modules listed above would cause evdi that used to work to suddenly stop working, that appears to be the case. Any advice would be appreciated because now I can't use the displays connected to my DisplayLink hub with either 5.10