Likely related: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2063983
Affecting Xubuntu/lightdm as well.
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Title:
Frequent boot to black di
The SDDM issue is duplicated in bug 2065321.
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https://bugs.launchpad.net/bugs/2063143
Title:
Frequent boot to black display
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The issue here is the same one that happened in gdm last year where the
startup would race with the load of DRM graphics drivers.
GDM fixed it by essentially running the equivalent of 'udevadm settle'.
The same kind of fix needs to be ported to sddm or systemd needs to be
modified to not emit CanG
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: systemd (Ubuntu)
Status: New => Confirmed
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Title:
Fr
** Changed in: plymouth
Status: New => Fix Released
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Title:
Frequent boot to black display
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** No longer affects: linux
** No longer affects: linux (Ubuntu)
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Title:
Frequent boot to black display
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** Changed in: systemd
Status: Unknown => New
** Changed in: linux
Status: New => Fix Released
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Title:
Frequent boot to black disp
** Also affects: systemd (Ubuntu)
Importance: Undecided
Status: New
** Bug watch added: github.com/systemd/systemd/issues #32509
https://github.com/systemd/systemd/issues/32509
** Also affects: systemd via
https://github.com/systemd/systemd/issues/32509
Importance: Unknown
** Changed in: sddm (Ubuntu)
Status: New => Confirmed
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Title:
Frequent boot to black display
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Plymouth not displaying anything is covered by bug 1869655 already so
please try kernel parameter:
plymouth.use-simpledrm
which should solve that.
** Changed in: plymouth (Ubuntu)
Status: New => Incomplete
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here is i915 with a successfull boot. the i915 driver finishes starting
before sddm starts.
** Attachment added: "i915-successfull-boot.txt"
https://bugs.launchpad.net/sddm/+bug/2063143/+attachment/5770119/+files/i915-successfull-boot.txt
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here is i915 failed to boot in the same way. you can see the i915 kernel
driver does not finish until much after sddm starts
** Attachment added: "i915-fail-boot.txt"
https://bugs.launchpad.net/sddm/+bug/2063143/+attachment/5770118/+files/i915-fail-boot.txt
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I am hitting this on i915 as well with the same 50-75% frequency.
I think this need to be upgraded to critical status (at least for non
GDM login managers where no mitigation exists) and potentially release
blocker depending on how widespread this issue is.
Devices I have confirmed affected by th
For the plymouth part I think the suggestion above "plymouth.use-
simpledrm" makes sense.
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Title:
Frequent boot to black display
To manage notif
** Changed in: sddm
Status: Unknown => New
** Changed in: plymouth
Status: Unknown => New
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Title:
Frequent boot to black display
** Bug watch added: github.com/sddm/sddm/issues #1917
https://github.com/sddm/sddm/issues/1917
** Also affects: sddm via
https://github.com/sddm/sddm/issues/1917
Importance: Unknown
Status: Unknown
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AMD kernel developer wants to classify this is as both SDDM bug and
plymouth bug https://gitlab.freedesktop.org/drm/amd/-/issues/3341.
amdgpu kernel driver is not ready by the time that sddm and plymouth are
started in some cases (race condition). Marking this as a sddm and
plymouth bug (in additio
** Changed in: linux
Status: Unknown => New
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Title:
Frequent boot to black display
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** Bug watch added: gitlab.freedesktop.org/drm/amd/-/issues #3341
https://gitlab.freedesktop.org/drm/amd/-/issues/3341
** Also affects: linux via
https://gitlab.freedesktop.org/drm/amd/-/issues/3341
Importance: Unknown
Status: Unknown
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this issue has appeared before on other AMD hardware but was closed due
to lack of activity and driver changes. my issue shows that it has re-
appeared on new hardware and drivers
https://gitlab.freedesktop.org/drm/amd/-/issues/1256
** Bug watch added: gitlab.freedesktop.org/drm/amd/-/issues #1256
Going to change this back to linux as the plymouth failing to display
indicates an issues with KMS (plymouth uses KMS to display graphics on
earlyboot which is what is happening here). The bootlogo from plymouth
always shows (even for a very brief time) when SDDM starts and when it
boots to a black
** Changed in: sddm (Ubuntu)
Assignee: Kleber Sacilotto de Souza (kleber-souza) => (unassigned)
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Title:
Frequent boot to black display
To m
Plymouth seems to be running, but also terminating within a couple of
seconds. Since it's designed to not display anything if it thinks it
won't run for very long then I think failing to see a Plymouth boot logo
is OK in this case. You might like to try the workaround for bug 1869655
which is to ad
Here is my current boot journalctl (where booting to a desktop
succeeded) for comparison incase it helps.
I will also note that on the boot to black screen I never see any
plymouth bootlogos or messages. The screen remains black after grub
(with only backlight level changing). When I get a success
Attached is the journalctl as instructed. I tried to power it off by
short pressing the power button a few times (as you can see in the log
at the end) while black screened but wasn't able to do that so hard to
force power off.
There are no logs in /var/crash/
** Attachment added: "preboot.txt"
Also, are there any files in /var/crash ?
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Title:
Frequent boot to black display
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Next time you have a failed boot followed by a successful boot, please
run:
journalctl -b-1 > prevboot.txt
and attach the resulting text file here.
** Package changed: linux-meta (Ubuntu) => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Tags added: amdgpu
** Changed in: linux-meta (Ubuntu)
Assignee: (unassigned) => Kleber Sacilotto de Souza (kleber-souza)
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Title:
Frequent boot to black display
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