[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work on a Thinkpad p50
I just found out about this. I wanted to get rid of the screen tearing that I observed on my Nitro AN515-53 laptop running Ubuntu 18.04.3 LTS with NVIDIA GeForce GTX 1050 Mobile GPU. I used https://askubuntu.com/a/020 and set nvidia_drm modeset=1 but then my external monitors didn't work after the reboot. So I switched from gdm3 to lightdm and that does the trick for me. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work on a Thinkpad p50 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work on a Thinkpad p50
I should add that the "fix" I reported is only a narrow fix. The internal display works. But external displays don't work if you have nvidia drivers, gdm3 and if you are using modeset=1 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work on a Thinkpad p50 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work on a Thinkpad p50
Closed per comment #20. Discussion continues in bug 1714881... ** Changed in: gdm3 (Ubuntu) Status: New => Invalid ** Changed in: nvidia-graphics-drivers-375 (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work on a Thinkpad p50 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work on a Thinkpad p50
Daniel, with the latest 17.10 the nvidia problems are now more specific and easier to reproduce. Neither of my Thinkpads gets to the login screen in discrete Nvidia mode iff modeset=1 is used. In hybrid graphics, the session starts, I suspect this is due to the intel driver being available. If I'm correct, then any machine with only an nvidia card should fail with nvidia modesetting. I have opened bug https://bugs.launchpad.net/ubuntu/+source/gnome- shell/+bug/1714881 This bug (1706474) could be closed I think. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work on a Thinkpad p50 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work on a Thinkpad p50
** Summary changed: - gdm3 nvidia modeset=1 is broken, external screens don't work + gdm3 nvidia modeset=1 is broken, external screens don't work on a Thinkpad p50 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work on a Thinkpad p50 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
Re: [Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
Good news from my side; I just updated everything on th ThinkPad W520, an old Optimus laptop. the Uubntu 17.10 desktop now works with hybrid graphics, prime sync and gdm3 using the latest updates (pre-release channel). I have not added any PPAs so it's using the 375 driver currently in the 17.10 repository. On 28 August 2017 at 21:08, Tim Richardsonwrote: > Thanks Doug, that bug report is exactly as the nvidia forum so you and I > are doing the same thing. > > On 28 August 2017 at 02:41, Doug McMahon <1706...@bugs.launchpad.net> > wrote: > >> bug reports aren't suitable for troubleshooting but anyway I do as shown >> here >> https://ubuntuforums.org/showthread.php?t=2365449 >> noting that I've lenovo ideapads, no options to use discrete only so >> using the typical optimus, i.e. intel handles display, nvidia handles >> rendering, all via nvidia-prime, have no external monitors.. >> >> -- >> You received this bug notification because you are subscribed to the bug >> report. >> https://bugs.launchpad.net/bugs/1706474 >> >> Title: >> gdm3 nvidia modeset=1 is broken, external screens don't work >> >> To manage notifications about this bug go to: >> https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/ >> +subscriptions >> > > > > -- > Tim Richardson > -- Tim Richardson -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
Re: [Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
Thanks Doug, that bug report is exactly as the nvidia forum so you and I are doing the same thing. On 28 August 2017 at 02:41, Doug McMahon <1706...@bugs.launchpad.net> wrote: > bug reports aren't suitable for troubleshooting but anyway I do as shown > here > https://ubuntuforums.org/showthread.php?t=2365449 > noting that I've lenovo ideapads, no options to use discrete only so using > the typical optimus, i.e. intel handles display, nvidia handles rendering, > all via nvidia-prime, have no external monitors.. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1706474 > > Title: > gdm3 nvidia modeset=1 is broken, external screens don't work > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions > -- Tim Richardson -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
bug reports aren't suitable for troubleshooting but anyway I do as shown here https://ubuntuforums.org/showthread.php?t=2365449 noting that I've lenovo ideapads, no options to use discrete only so using the typical optimus, i.e. intel handles display, nvidia handles rendering, all via nvidia-prime, have no external monitors.. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
Re: [Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
HI Doug, it could be hardware dependent although my two Optimus laptops are very mainstream (both Quadro). It's more likely to be configuration (I hope) How do you achieve modeset=1? How do you confirm that you have Prime Sync working? I use xrandr --verbose | grep PRIME regards Tim On 27 August 2017 at 00:19, Doug McMahon <1706...@bugs.launchpad.net> wrote: > As far as hybrid (optimus) machines maybe this is hardware dependent? > On all mine (660m, 775m, 940m) nvidia modeset=1 & Prime Synchronization > work just fine, 16.04.3 thru 17.10. > In 16.04.3 obviously using lightdm, in 17.10 using gdm3. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1706474 > > Title: > gdm3 nvidia modeset=1 is broken, external screens don't work > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions > -- Tim Richardson -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
As far as hybrid (optimus) machines maybe this is hardware dependent? On all mine (660m, 775m, 940m) nvidia modeset=1 & Prime Synchronization work just fine, 16.04.3 thru 17.10. In 16.04.3 obviously using lightdm, in 17.10 using gdm3. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
Sorry, that was premature. I had not enabled modeset=1 properly. After doing that a) in Optimus mode, only the laptop display works. The nvidia settings control panel opens, but it detects no screens. b) in discrete nvidia BIOS mode, gdm is stuck in a greeter loop when trying to start a Gmome or Gnome classic session c) in discrete Nvidia BIOS mode, Wayland is a session option, and it works. So this is still a bug: 17.10 Ubuntu is still broken for Optimus users who want tear-free graphics. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
On the newer machine, the P50, I reinstalled 17.10 ubuntu yesterday, with pre-release packages enabled. It is using gdm3. It works, even with nvidia modeset=1 and external monitors. It is not obvious to me which updated packages have fixed this, since I also tried pre-release on the broken install. The conclusion is that I had something broken in my configuration. I uninstalled X and the desktop environment a few times, which didn't work. In pure Nvidia mode, not Optimus, I am offered a Wayland session, which seems to work (I only did a few minutes of testing). My broken install was an upgrade from 17.04. When 17.10 goes beta, I will install 17.04, fully update it, and test a migration to 17.10. If this doesn't work, I will seek help to track down which configuration settings could cause this. It is certainly encouraging that it works from a reinstall. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
It is also broken on a ThinkPad W520, which is much older hardware (although still supported by current nvidia drivers). The Nvidia driver, gdm3, gnome (or gnome ubuntu) and modeset=1 is broken. Replace gdm3 with lightdm, and everything works. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
And also note that modeset=1 is not designed to activate wayland. It is necessary to use the Prime Synchonization feature of the new nvidia drivers, which is actually a feature of X 1.19 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
Update & simplication. This bug affects 17.10 & 17.04 with the current LTS support nvidia drivers. This bug affects both my laptops with nvidia hardware. External monitors are not necessary to reproduce. Reproduction is simple. 1. Activate the nvidia hardware using discrete mode. Therefore no intel graphics hardware is present. 2. Enable the nvidia driver in modeset=1 make a file /etc/modprobe.d/zz-nvidia-modeset.conf with contents options nvidia_384_drm modeset=1 3. sudo update-initramfs 4. make sure gdm3 is your display manager 5. reboot 6. attempt to start a gnome session -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
Re: [Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
Thanks, I look forward to it. It works with lightdm, though. What is GDM doing that leads to a kernel panic, that lightdm does not do? On 31 July 2017 at 12:03, Daniel van Vugtwrote: > Oh, it appears your "p50 with a quadro M1000M" is relatively new. > > I read that Canonical has a kernel fix on the way that *might* help, but > that discussion is hidden in private bug 1647617. So if and when that > fix gets released I will give updates here. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1706474 > > Title: > gdm3 nvidia modeset=1 is broken, external screens don't work > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions > -- Tim Richardson -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
Oh, it appears your "p50 with a quadro M1000M" is relatively new. I read that Canonical has a kernel fix on the way that *might* help, but that discussion is hidden in private bug 1647617. So if and when that fix gets released I will give updates here. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
** This bug is no longer a duplicate of bug 1705369 Ubuntu 17.10 boots to black screen when using Nvidia drivers (on a desktop with an Intel GPU) -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
*** This bug is a duplicate of bug 1705369 *** https://bugs.launchpad.net/bugs/1705369 ** This bug has been marked a duplicate of bug 1705369 Ubuntu 17.10 boots to black screen when using Nvidia drivers (on a desktop with an Intel GPU) -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
Re: [Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
That;s even worse. I don't any working screen, no login. This is not a trivial bug, I think, although I'd be happy for an easy solution. ul 26 17:26:38 raffles systemd[2817]: Starting Accessibility services bus... Jul 26 17:26:38 raffles dbus-daemon[2832]: Successfully activated service 'org.a11y.Bus' Jul 26 17:26:38 raffles systemd[2817]: Started Accessibility services bus. Jul 26 17:26:38 raffles at-spi-bus-launcher[2843]: Activating service name='org.a11y.atspi.Registry' Jul 26 17:26:38 raffles at-spi-bus-launcher[2843]: Successfully activated service 'org.a11y.atspi.Registry' Jul 26 17:26:38 raffles org.a11y.atspi.Registry[2848]: SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry Jul 26 17:26:38 raffles gnome-session[2839]: gnome-session-binary[2839]: WARNING: Application 'org.gnome.Shell.desktop' killed by signal 11 Jul 26 17:26:38 raffles gnome-session-binary[2839]: WARNING: Application 'org.gnome.Shell.desktop' killed by signal 11 Jul 26 17:26:38 raffles kernel: [ 21.885358] show_signal_msg: 1 callbacks suppressed Jul 26 17:26:38 raffles kernel: [ 21.885360] gnome-shell[2869]: segfault at 28 ip 7f00f6c3ad74 sp 7ffef4304940 error 4 in libmutter-0.so.0.0.0[7f00f6bf3000+131000] Jul 26 17:26:39 raffles gnome-session[2839]: gnome-session-binary[2839]: WARNING: Application 'org.gnome.Shell.desktop' killed by signal 11 Jul 26 17:26:39 raffles gnome-session[2839]: gnome-session-binary[2839]: WARNING: App 'org.gnome.Shell.desktop' respawning too quickly Jul 26 17:26:39 raffles gnome-session-binary[2839]: WARNING: Application 'org.gnome.Shell.desktop' killed by signal 11 Jul 26 17:26:39 raffles gnome-session-binary[2839]: Unrecoverable failure in required component org.gnome.Shell.desktop Jul 26 17:26:39 raffles gnome-session[2839]: gnome-session-binary[2839]: CRITICAL: We failed, but the fail whale is dead. Sorry Jul 26 17:26:39 raffles gnome-session-binary[2839]: WARNING: App 'org.gnome.Shell.desktop' respawning too quickly Jul 26 17:26:39 raffles gnome-session-binary[2839]: CRITICAL: We failed, but the fail whale is dead. Sorry Jul 26 17:26:39 raffles org.a11y.atspi.Registry[2848]: XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0" Jul 26 17:26:39 raffles org.a11y.atspi.Registry[2848]: after 21 requests (21 known processed) with 0 events remaining. Jul 26 17:26:39 raffles /usr/lib/gdm3/gdm-x-session[2822]: (**) Option "fd" "33" Jul 26 17:26:39 raffles /usr/lib/gdm3/gdm-x-session[2822]: (**) Option "fd" "36" On 26 July 2017 at 15:01, Daniel van Vugtwrote: > If everything works fine with lightdm then you can configure gdm to > behave the same as lightdm. > > Just edit /etc/gdm3/custom.conf and uncomment: #WaylandEnable=false > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1706474 > > Title: > gdm3 nvidia modeset=1 is broken, external screens don't work > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions > -- Tim Richardson ** Attachment added: "syslog" https://bugs.launchpad.net/bugs/1706474/+attachment/4921515/+files/syslog -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
If everything works fine with lightdm then you can configure gdm to behave the same as lightdm. Just edit /etc/gdm3/custom.conf and uncomment: #WaylandEnable=false -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
Re: [Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
The problem is that Optimus (Nvidia's hybrid driver technology) requires modeset=1 to use it properly so there are millions of laptop users who will have a problem with this :) https://devtalk.nvidia.com/default/topic/957814/linux/prime-and-prime-synchronization/ Plus it works fine with lightdm. On 26 July 2017 at 13:58, Daniel van Vugtwrote: > I suggest you should just avoid Wayland if you want multi-GPU to work > properly. That means using modeset=0. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1706474 > > Title: > gdm3 nvidia modeset=1 is broken, external screens don't work > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions > -- Tim Richardson -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
I suggest you should just avoid Wayland if you want multi-GPU to work properly. That means using modeset=0. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
I think it might be a general problem with Wayland (which is what gets used if you set modeset=1): https://bugs.freedesktop.org/show_bug.cgi?id=94851 So GDM/Wayland uses the first GPU only, which is your Intel GPU, the one wired to the laptop screen. ** Bug watch added: freedesktop.org Bugzilla #94851 https://bugs.freedesktop.org/show_bug.cgi?id=94851 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
** Also affects: nvidia-graphics-drivers-375 (Ubuntu) Importance: Undecided Status: New ** Tags added: black-screen gnome-17.10 multimonitor nvidia ** Tags removed: gnome-17.10 ** Tags added: zesty -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
** Attachment added: "xrandr output" https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+attachment/4921331/+files/xrandr.txt -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work
** Attachment added: "nvidia-bug-report" https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+attachment/4921327/+files/nvidia-bug-report.log.gz -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs