[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
** No longer affects: gdm3 (Ubuntu) ** No longer affects: gdm3 (Ubuntu Lunar) ** No longer affects: gdm3 (Ubuntu Mantic) ** Description changed: [ Impact ] The fbdev subsystem has been deprecated for a long time. We should drop it in favour of using simpledrm with fbdev emulation layer. This requires Kernel config changes: FB_EFI=n FB_VESA=n fbcon will still require FB to be available, but will use the fbdev emulation layer When this stack is enabled, it changes boot timing such that some drivers may take a longer time to boot and GDM may hang in a black - screen. - - This issue has been readily reproduced in Ubuntu and reported to upstream mutter. - https://gitlab.gnome.org/GNOME/mutter/-/issues/2909 + screen (bug 2039757). [ Test Plan ] - * Ensure that a kernel with required kernel changes can boot to GDM using DRM driver (amdgpu, i915, or nouveau) + * Ensure that systems currently relying on fbdev (and therefore only allowing Xorg logins) such as some virtual machine types, boot with working Wayland support. [ Where Problems could occur ] * Race conditions could be exposed to DE environments * Software that expects to find DRM device at /dev/dri/card0 may have a problem. * Some older versions of NVIDIA driver might not work properly. [ Other Info ] * Fedora bug: https://bugzilla.redhat.com/show_bug.cgi?id=2022385 ** Description changed: [ Impact ] - The fbdev subsystem has been deprecated for a long time. We should drop it in favour of using simpledrm with fbdev emulation layer. + + The fbdev subsystem has been deprecated for a long time. We should drop + it in favour of using simpledrm with fbdev emulation layer. This requires Kernel config changes: FB_EFI=n FB_VESA=n fbcon will still require FB to be available, but will use the fbdev emulation layer - When this stack is enabled, it changes boot timing such that some - drivers may take a longer time to boot and GDM may hang in a black - screen (bug 2039757). + [ Test Plan ] - [ Test Plan ] - * Ensure that systems currently relying on fbdev (and therefore only allowing Xorg logins) such as some virtual machine types, boot with working Wayland support. + * Ensure that systems currently relying on fbdev (and therefore only + allowing Xorg logins) such as some virtual machine types, boot with + working Wayland support. [ Where Problems could occur ] + + * When this stack is enabled, it changes boot timing such that some drivers may take a longer time to boot and GDM may hang in a black screen (bug 2039757). * Race conditions could be exposed to DE environments * Software that expects to find DRM device at /dev/dri/card0 may have a problem. * Some older versions of NVIDIA driver might not work properly. [ Other Info ] + * Fedora bug: https://bugzilla.redhat.com/show_bug.cgi?id=2022385 -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
I've split up the GDM for Jammy change into https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/2039757 ** No longer affects: gdm3 (Ubuntu Jammy) -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
The GDM issue sounds like something we do want fixed, but not here. It should get its own bug. This bug should involve no SRUs. -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
> Oh, wait. You are just fixing the race condition? Yeah; I see the confusion. This issue got caught up by making sure the GDM race condition was fixed at the same as when this feature is enabled. Perhaps it's better to split the GDM part of it off to it's own bug instead then. > In that case, why can you not revert the kernel config change in the HWE backport to Jammy? That's certainly a possible solution, but what happens when people run mainline kernels for testing another issue and are exposed to this? That's how I discovered it, reported it upstream and got it fixed in GDM. It's a trivial fix. -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
Oh, wait. You are just fixing the race condition? Please the SRU documentation then. Right now I read "We should drop it in favour of using simpledrm with fbdev emulation layer" which is very misleading as to what you're actually proposing to do. -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
Oh, this? > When this stack is enabled, it changes boot timing such that some drivers may take a longer time to boot and GDM may hang in a black screen. In that case, why can you not revert the kernel config change in the HWE backport to Jammy? -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
> it will expose the race condition to GDM What race condition, please? If this is the justification for the proposed SRU, then I'd expect to see that explained, but I don't see any explanation. -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
The problem is specifically when 24.04's kernel backports to 22.04 it will expose the race condition to GDM. If that kernel will never backport then it won't be a problem. -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
I don't quite follow why we're calling this an issue. It's an enhancement that should target 24.04 only. -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
The issue won't occur in Lunar. It's only specifically a problem with gdm when a kernel has been configured this way. It's not a problem in Jammy yet, but will be a problem when such a kernel gets backported as HWE. ** Also affects: linux (Ubuntu Lunar) Importance: Undecided Status: New ** Also affects: gdm3 (Ubuntu Lunar) Importance: Undecided Status: New ** Also affects: nvidia-graphics-drivers-470 (Ubuntu Lunar) Importance: Undecided Status: New ** Changed in: nvidia-graphics-drivers-470 (Ubuntu Lunar) Status: New => Fix Released ** Changed in: linux (Ubuntu Lunar) Status: New => Won't Fix ** Changed in: gdm3 (Ubuntu Lunar) Status: New => Invalid ** Changed in: gdm3 (Ubuntu Jammy) Status: Incomplete => In Progress -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
This has been marked as fixed in mantic, but this bug does not say what the plan is for lunar, which is still the supported upgrade path from jammy. ** Changed in: gdm3 (Ubuntu Jammy) Status: In Progress => Incomplete -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
can't target NN yet, so it'll stay open for mantic for now -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
Right, I don't think we'll get this in mantic yet, I'll send it for linux-unstable first (and then it'll get enabled by mainline builds). -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
Yes I was referring to the linux task. -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
The kernel part yes. The bug fix in GDM to prepare for whenever the kernel part happens I would think not. -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
This seems like a significant enhancement that will affect the graphics backends chosen by Plymouth and some desktop sessions, particularly virtual machines. Surely this needs a feature freeze exception? -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
I've uploaded the jammy backport of this patch into the queue, so assigning it to myself. As I have readily seen this problem on my own test kernels I'll validate it with a local kernel with the matching kconfig options when it's accepted. This can then be done in advance of waiting for matching changes landing in OEM-6.5, or HWE-6.5. ** Changed in: gdm3 (Ubuntu Jammy) Status: Triaged => In Progress ** Changed in: gdm3 (Ubuntu Jammy) Assignee: (unassigned) => Mario Limonciello (superm1) ** Description changed: - [ Impact ] + [ Impact ] The fbdev subsystem has been deprecated for a long time. We should drop it in favour of using simpledrm with fbdev emulation layer. This requires Kernel config changes: FB_EFI=n FB_VESA=n fbcon will still require FB to be available, but will use the fbdev emulation layer When this stack is enabled, it changes boot timing such that some drivers may take a longer time to boot and GDM may hang in a black screen. + This issue has been readily reproduced in Ubuntu and reported to upstream mutter. + https://gitlab.gnome.org/GNOME/mutter/-/issues/2909 + [ Test Plan ] * Ensure that a kernel with required kernel changes can boot to GDM using DRM driver (amdgpu, i915, or nouveau) [ Where Problems could occur ] * Race conditions could be exposed to DE environments * Software that expects to find DRM device at /dev/dri/card0 may have a problem. * Some older versions of NVIDIA driver might not work properly. [ Other Info ] * Fedora bug: https://bugzilla.redhat.com/show_bug.cgi?id=2022385 -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
** Changed in: gdm Status: Unknown => Fix Released -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
Launchpad has imported 6 comments from the remote bug at https://bugzilla.redhat.com/show_bug.cgi?id=2022385. If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. On 2021-11-11T14:33:25+00:00 bcotton wrote: This is a tracking bug for Change: Replace the fbdev drivers with simpledrm and the DRM fbdev emulation layer For more details, see: https://fedoraproject.org/wiki/Changes/ReplaceFbdevDrivers This change replaces the legacy Linux frame buffer device (fbdev) drivers that are still used in Fedora, with the latest simpledrm driver and the DRM fbdev emulation layer. If you encounter a bug related to this Change, please do not comment here. Instead create a new bug and set it to block this bug. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1965303/comments/0 On 2021-12-23T11:26:38+00:00 fmartine wrote: This change has been present in the Fedora kernel since https://gitlab.com/cki-project/kernel- ark/-/commit/53d2c01aef5aaad8b8bb54e4254f6ae671c76ee5 Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1965303/comments/1 On 2021-12-23T11:44:17+00:00 fmartine wrote: *** Bug 1986222 has been marked as a duplicate of this bug. *** Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1965303/comments/2 On 2022-02-08T21:06:33+00:00 bcotton wrote: This bug appears to have been reported against 'rawhide' during the Fedora Linux 36 development cycle. Changing version to 36. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1965303/comments/3 On 2022-02-22T16:34:36+00:00 bcotton wrote: We have reached the 'Change complete (100% complete)' deadline in the Fedora Linux 36 release schedule. At this time, all Changes should be fully complete. Indicate this by setting this tracking bug to ON_QA. If you need to defer this Change to a subsequent release, please needinfo me. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1965303/comments/4 On 2022-05-10T14:41:45+00:00 bcotton wrote: F36 was released today. If this Change did not land in the release, please notify bcotton as soon as possible. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1965303/comments/6 ** Changed in: linux (Fedora) Status: Unknown => Fix Released ** Changed in: linux (Fedora) Importance: Unknown => Undecided -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
** Description changed: - The fbdev subsystem has been deprecated for a long time. We should drop - it in favour of using simpledrm with fbdev emulation layer. + [ Impact ] + The fbdev subsystem has been deprecated for a long time. We should drop it in favour of using simpledrm with fbdev emulation layer. - This requires config changes: + This requires Kernel config changes: FB_EFI=n FB_VESA=n fbcon will still require FB to be available, but will use the fbdev emulation layer - fedora bug: - https://bugzilla.redhat.com/show_bug.cgi?id=2022385 + When this stack is enabled, it changes boot timing such that some + drivers may take a longer time to boot and GDM may hang in a black + screen. + + [ Test Plan ] + * Ensure that a kernel with required kernel changes can boot to GDM using DRM driver (amdgpu, i915, or nouveau) + + [ Where Problems could occur ] + * Race conditions could be exposed to DE environments + * Software that expects to find DRM device at /dev/dri/card0 may have a problem. + * Some older versions of NVIDIA driver might not work properly. + + [ Other Info ] + * Fedora bug: https://bugzilla.redhat.com/show_bug.cgi?id=2022385 ** Bug watch added: gitlab.gnome.org/GNOME/mutter/-/issues #2909 https://gitlab.gnome.org/GNOME/mutter/-/issues/2909 ** Also affects: gdm via https://gitlab.gnome.org/GNOME/mutter/-/issues/2909 Importance: Unknown Status: Unknown ** Bug watch added: Red Hat Bugzilla #2022385 https://bugzilla.redhat.com/show_bug.cgi?id=2022385 ** Also affects: linux (Fedora) via https://bugzilla.redhat.com/show_bug.cgi?id=2022385 Importance: Unknown Status: Unknown -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
Mantic has 45~beta-1ubuntu1 which picks up the fix for this. Jammy is still open. ** Changed in: gdm3 (Ubuntu Mantic) Status: Triaged => Fix Released -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
** Description changed: The fbdev subsystem has been deprecated for a long time. We should drop it in favour of using simpledrm with fbdev emulation layer. This requires config changes: - DRM=y - DRM_FBDEV_EMULATION=y - FB_EFI=n - FB_VESA=n (? check this) - - SYSFB_SIMPLEFB=y + FB_VESA=n fbcon will still require FB to be available, but will use the fbdev emulation layer - At the time of filing this bug report, the NVIDIA drivers don't support - the fbdev emulation layer, so VT's would be broken on them if this was - to be enabled right now. So the drivers need fixing, and this bug report - is a placeholder until we are able to move forward. - - fedora bug: https://bugzilla.redhat.com/show_bug.cgi?id=2022385 -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
** Package changed: gdm (Ubuntu Jammy) => gdm3 (Ubuntu Jammy) -- 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/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
** Also affects: gdm (Ubuntu Jammy) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Jammy) Importance: Undecided Status: New ** Also affects: nvidia-graphics-drivers-470 (Ubuntu Jammy) Importance: Undecided Status: New ** Also affects: gdm (Ubuntu Mantic) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Mantic) Importance: Undecided Assignee: Timo Aaltonen (tjaalton) Status: Confirmed ** Also affects: nvidia-graphics-drivers-470 (Ubuntu Mantic) Importance: Undecided Status: Fix Released ** Changed in: linux (Ubuntu Jammy) Status: New => Won't Fix ** Changed in: nvidia-graphics-drivers-470 (Ubuntu Jammy) Status: New => Fix Released ** Changed in: gdm (Ubuntu Mantic) Status: New => Triaged ** Changed in: gdm (Ubuntu Jammy) Status: New => Triaged -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm in Ubuntu. https://bugs.launchpad.net/bugs/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
all current nvidia releases support simpledrm since last March, except 390 which has been EOL for some time now -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm in Ubuntu. https://bugs.launchpad.net/bugs/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
thanks for the heads-up, yeah that'd need to be fixed in jammy as well (for gdm) when a hwe kernel supports simpledrm I'm thinking if mantic 6.5 would be the first candidate ** Changed in: nvidia-graphics-drivers-470 (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm in Ubuntu. https://bugs.launchpad.net/bugs/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1965303] Re: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer
I'm adding a task for gdm to this bug. The reason is that if simpledrm is used, we've found race conditions that occur where the transition from simpledrm to the proper KMS driver may race with gdm starting up the login screen. When gdm loses the race you end up with a black screen. So please make sure that any kernels that do adopt simpledrm the matching GDM for OS releases that run this kernel (think about HWE!) will need to pick up this GDM fix as well. https://gitlab.gnome.org/GNOME/gdm/-/commit/04e119c8332a564cfad05dfb9cb6ec547d5ba954 ** Also affects: gdm (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm in Ubuntu. https://bugs.launchpad.net/bugs/1965303 Title: Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm/+bug/1965303/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
