Ideally the flicker (PSR) should get a separate bug to the black screen
regression, but it's difficult to separate them when both are messing up
the same screen at the same time. So let's focus on just the black
screen here.
** Summary changed:
- post jammy update, black/flickering screen on boo
based on previous comment no longer testing with i915.enable_psr=0, but
here's what i've narrowed it down to:
v5.13.19: works
v5.14.0rc2: black screen
looks like the v5.14.0rc1 build failed so can't test that?
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v5.14: black screen
v5.13: black screen with i915.enable_psr=0, works without
went back and tried the initial 5.13.0-35 as well, and it also does the
black screen with i915.enable_psr=0
will try to find the first mainline 5.13 that doesn't work today (or if they
all work).
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OK then next please try https://kernel.ubuntu.com/~kernel-
ppa/mainline/v5.14/
If it works then next try: https://kernel.ubuntu.com/~kernel-
ppa/mainline/v5.14.10/
If it fails then try: https://kernel.ubuntu.com/~kernel-
ppa/mainline/v5.13/
We need to find the version where the black screen star
both of those exhibit the bug.
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https://bugs.launchpad.net/bugs/1965968
Title:
post jammy update, black/flickering screen on boot
Status in linux package in Ubuntu:
Conf
Heh, two separate bugs on screen at the same time...
Next please try these kernels:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.14.20/
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.14.21/
And please keep i915.enable_psr=0
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i915.enable_psr=0 did not fix the black screen issue, but did appear to
remove the flickering purple streaks, fwiw.
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https://bugs.launchpad.net/bugs/1965968
Title:
post jam
Please try adding kernel parameter: i915.enable_psr=0
Although if kernel 5.13 works then I suspect it may be a relation of bug
1965882. As I dig deeper into that one it seems like a general kernel
bug that's not specific to nouveau at all.
** Package changed: plymouth (Ubuntu) => linux (Ubuntu)
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