[Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
Being duped here with a more specific bug, i.e 19.10 optimus hardware No login to ubuntu session possible with gdm, lightdm is ok Maybe a few comments. This bug orig. suggests that one could actually login on optimus hardware with nvidia-drm.modeset=1 thru gdm. That was once the case, it no longer is in 19.10. The only session available is a wayland one because it falls back to Intel. As far as why users set nvidia-drm.modeset=1? I'd suggest the majority do so on optimus machines to be able to use nvidia without tearing. For the most part none have any interest in wayland even though wayland would solve tearing. Why?, because no (or virtually none) optimus machine has ever been able to use wayland & nvidia drivers. Not in the last couple of years, not now. While I don't have a desktop machine I do have a laptop with nvidia GPU only. In that case (19.04) with nvidia-drm.modeset=1 it presents and logs into a wayland session but llvmpipe only. It does work ok in a ubuntu session. Maybe I'll give it a try with 19.10 though on this machine there is no tearing so xorg is fine, currently any positives, if any, of wayland are outweighed by it's negatives. -- 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/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
In isolation I don't think it's correct to say that Wayland sessions have "no external monitors". Wayland sessions do work with external monitors on the Nvidia driver if you have nvidia-drm.modeset=1. I've confirmed this on a desktop at least. It sounds like you're describing some other laptop-specific or Optimus- specific bug. So I think to avoid confusion that should have its own separate bug report. -- 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/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
Re: [Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
just one last thing, possibly you are not aware that 19.04 Ubuntu wayland sessions have exactly the same problem: no external monitors. While this bug refers to Xorg, the problem is not limited to Xorg. At least on my Optimus laptop. And when I use its multiplexor to go into pure Nvidia mode, no monitors work, not even the laptop panel. On Fri, 21 Jun 2019 at 12:50, Daniel van Vugt wrote: > Actually, maybe those other DMs don't run as root. My memory is failing. > So again maybe we do want a similar workaround in gdm3. But that doesn't > seem to be the root cause of the bug. > > ** Changed in: gdm3 (Ubuntu) >Status: Invalid => Opinion > > ** No longer affects: mutter (Ubuntu) > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1716857 > > Title: > nvidia-drm.modeset=1 results in no monitors detected by Xorg > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+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/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
Actually, maybe those other DMs don't run as root. My memory is failing. So again maybe we do want a similar workaround in gdm3. But that doesn't seem to be the root cause of the bug. ** Changed in: gdm3 (Ubuntu) Status: Invalid => Opinion ** No longer affects: mutter (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
> If you need modeset=1 for wayland, then why is there any effort to support nvidia and wayland under gnome, since it won't work (or are only optimus systems affected by this?) I don't understand the question, sorry. The statement "it won't work" is wrong. Wayland does work. This bug is about Xorg, not Wayland. > So it looks like a gdm3 bug. Yes I understand that's how it looks, but we have established the root cause of this bug is in the Nvidia driver. Maybe we will be able to work around it with some gdm3 change, but that's not where the root cause of the problem is. Other display managers are managing to work around the Nvidia driver bug here because they run as root. gdm3 does not run as root because it is trying to be more secure and avoid running as root. Calling this a gdm3 bug is probably wrong. I can reproduce the bug without gdm3. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
Re: [Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
I think his point was to isolate the problem as being gdm3's wayland code. If you need modeset=1 for wayland, then why is there any effort to support nvidia and wayland under gnome, since it won't work (or are only optimus systems affected by this?) my point was that you marked this as invalid, but the only way to avoid this bug is to avoid using gdm3. You don't have to change anything else. So it looks like a gdm3 bug. On Fri, 21 Jun 2019 at 11:50, Daniel van Vugt wrote: > Compiling gdm3 without wayland isn't a fix. It's a workaround, and kind > of pointless. It's pointless because the most common reason for using > nvidia-drm.modeset=1 is to get Wayland support. I know there are other > reasons for wanting nvidia-drm.modeset=1 such as avoiding tearing in > PRIME setups. But mostly if people use modeset=1 it is to get Wayland > support. > > If we can't get a fix from Nvidia then some kind of workaround that runs > Xorg as root (like comment #26) is probably the next best option. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1716857 > > Title: > nvidia-drm.modeset=1 results in no monitors detected by Xorg > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions > -- Tim Richardson -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
Compiling gdm3 without wayland isn't a fix. It's a workaround, and kind of pointless. It's pointless because the most common reason for using nvidia-drm.modeset=1 is to get Wayland support. I know there are other reasons for wanting nvidia-drm.modeset=1 such as avoiding tearing in PRIME setups. But mostly if people use modeset=1 it is to get Wayland support. If we can't get a fix from Nvidia then some kind of workaround that runs Xorg as root (like comment #26) is probably the next best option. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
What we know about this bug is that gdm3, nvidia and modeset=1 is broken under configurations which are not broken when sddm and lightdm are used. we know that gdm3 sessions with external monitors work with root permissions. we know that gdm3 compiled with wayland also works (according to the gentoo user generix). And neither gnome developers nor nvidia acknowledge a bug. If you make a venn diagram of all of this, gdm3 is the intersection of every observation. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
"gdm3 compile without wayland", I meant -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
Nvidia 430.26 behaves a bit differently. It just fails to start as non- root and gives reasons: [ 897.467] xf86EnableIOPorts: failed to set IOPL for I/O (Operation not permitted) ... [ 897.470] (EE) NVIDIA: Failed to initialize the NVIDIA kernel module. Please see the [ 897.470] (EE) NVIDIA: system's kernel log for additional error messages and [ 897.470] (EE) NVIDIA: consult the NVIDIA README for details. [ 897.470] (EE) NVIDIA: Failed to initialize the NVIDIA kernel module. Please see the [ 897.470] (EE) NVIDIA: system's kernel log for additional error messages and [ 897.470] (EE) NVIDIA: consult the NVIDIA README for details. [ 897.470] (EE) [drm] Failed to open DRM device for (null): -2 [ 897.470] (EE) [drm] Failed to open DRM device for pci::01:00.0: -2 So then the NVIDIA driver gives up and Xorg tries the modeset driver instead. Modeset seems to detect my monitor fine (got the EDID) but then fails with bug 1813897. This is now a bit off-topic, but I suspect the above problem with nvidia-430 will have the same fix as this bug. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
User generix reports that when gdm3 is compiled without wayland support, this bug is not seen. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
I posted here: https://devtalk.nvidia.com/default/topic/1055528/linux/nvidia-driver-in- modeset-1-requires-root-permissions-daniel-van-vugt-canonical-concludes- it-is-an-nvidia-bug/?offset=3#5351122 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
** No longer affects: gdm3 (Debian) ** Tags added: eoan -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
I will post your findings to the nvidia developers forum. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
Not yet. I am just untangling more Nvidia bugs today. Also, I forgot to mention that you CAN run Xorg+Nvidia and see your monitors as non-root. But only after you have started and stopped Xorg as root beforehand. Something gets remembered, maybe in $HOME somewhere? -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
Also, it sounds like the root cause here is the same as bug 1769857. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
Hi Daniel, thanks for not forgetting about this, unlike everyone else :) Have you communicated this observation to Nvidia at all? -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1716857] Re: nvidia-drm.modeset=1 results in no monitors detected by Xorg
For a full list of reasons to not use nvidia-drm.modeset=1 right now, please see: https://bugs.launchpad.net/ubuntu/+bugs?field.tag=nvidia-drm.modeset -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1 results in no monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
