*** This bug is a duplicate of bug 2063143 ***
https://bugs.launchpad.net/bugs/2063143
** This bug has been marked a duplicate of bug 2063143
sddm/simpledrm race conditions leads to frequent black display on bootup
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This bug was fixed in the package sddm - 0.20.0-2ubuntu4.2
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sddm (0.20.0-2ubuntu4.2) noble; urgency=medium
* Apparently we use a custom sddm.service in debian/ and not
the upstream provided sddm.service. Second attempt (LP: #2066275)
-- Scarlett Moore Mon, 01 Jul 2024
Can confirm that version 0.20.0-2ubuntu4.2 of sddm fixes this issue on my fresh
Kubuntu install (with xserver-xorg-video-amdgpu, Radeon RX 6600 XT).
Thanks for your work on this! I spent the better part of a day searching for
the cause since the logs contained no errors or warnings.
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AMD Ryzen 7 3700X, ASUS PRIME B450M-A II, AMD Radeon RX 6650 XT system
and also affected. Just thought I'd comment as I initially thought it
was something to do with amdgpu, because system was happily running
22.04
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Bugs,
Hello Scarlett, or anyone else affected,
Accepted sddm into noble-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/sddm/0.20.0-2ubuntu4.2
in a few hours, and then in the -proposed repository.
Please help us by testing this new package. See
Alright, found the issue. So it seems we ship a custom sddm.service in debian/
and we do not use the provided sddm.service from upstream, and thus my patch
has no significance. I have now patched the custom sddm.service file that is
shipped. Unfortunately I do not have upload rights here and
It is the correct version, Rik fixed it for me. The patch is in there.
Still investigating.
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https://bugs.launchpad.net/bugs/2066275
Title:
[SRU] Fix black screen on second
0.20.0-2ubuntu4.1 is not the correct version. 0.20.0-2ubuntu5 is the
version I had. Looking into what may have happened.
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https://bugs.launchpad.net/bugs/2066275
Title:
[SRU]
** Tags removed: verification-needed verification-needed-noble
** Tags added: verification-failed verification-failed-noble
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https://bugs.launchpad.net/bugs/2066275
Title:
** Tags added: noble simpledrm
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https://bugs.launchpad.net/bugs/2066275
Title:
[SRU] Fix black screen on second boot due to video drivers not being
ready.
To manage
Confirm that the sddm proposed 0.20.0-2ubuntu4.1 doesn't have the
suggested patch, but adding manually that lines to
"/usr/lib/systemd/system/sddm.service" fixed the issue.
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Installed sddm proposed sddm proposed 0.20.0-2ubuntu4.1 and the issue
persists, but adding the changes shown in
https://github.com/sddm/sddm/pull/1924/files to sddm.service file the
issue is fixed.
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Installed sddm proposed 0.20.0-2ubuntu4.1 and nothing changed, still
freeze with black screen on boot.
As workaround inserting "plymouth.use-simpledrm" to kernel parameters in
grub configuration does show plymouth theme and switches to sddm
normally.
Dell Inspiron 15 3530, NVIDIA MX550/INTEL
And indeed I get failing boots even with sdddm=0.20.0-2ubuntu4.1.
** Changed in: sddm (Ubuntu Noble)
Status: Fix Committed => In Progress
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I enabled proposed and installed the updated package with
$sudo apt install sdddm=0.20.0-2ubuntu4.1
But my /usr/lib/systemd/system/sddm.service still looks like this:
[Unit]
Description=Simple Desktop Display Manager
Documentation=man:sddm(1) man:sddm.conf(5)
# Change
I also think it should target Jammy because eventually the 6.8 kernels
will backport there and introduce this bug to even more people.
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https://bugs.launchpad.net/bugs/2066275
I do think it makes sense to pull in the change you're doing for now,
but I do want to mention this is tech debt to pick up that approach to
avoid this issue as that isn't merged and there isn't really line of
sight to a proper fix:
https://github.com/sddm/sddm/pull/1924
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As for the duplicate bug, I didn't know about the first bug when I ran
into the issue. I was later pointed to the first bug and then I linked
them. Sorry for any confusion.
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Hi,
This fixes the bug for me. Thanks, Scarlett
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https://bugs.launchpad.net/bugs/2066275
Title:
[SRU] Fix black screen on second boot due to video drivers not being
ready.
I don't understand why a second bug was created for this SRU when using
bug 2063143 (of which bug 2065321 is a duplicate) would likely have more
people willing to do the verification.
** Changed in: sddm (Ubuntu Noble)
Status: Confirmed => Fix Committed
** Tags added: verification-needed
I looked at the source code for sddm in Oracular and discovered that
this change is included in it so I'm marking the Oracular task as Fix
Released.
** Changed in: sddm (Ubuntu)
Status: Confirmed => Fix Released
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: sddm (Ubuntu Noble)
Status: New => Confirmed
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: sddm (Ubuntu)
Status: New => Confirmed
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** Summary changed:
- SRu: Fix black screen on second boot due to video drivers not being ready.
+ [SRU] Fix black screen on second boot due to video drivers not being ready.
** Also affects: sddm (Ubuntu Noble)
Importance: Undecided
Status: New
** Changed in: sddm (Ubuntu Noble)
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