[Kernel-packages] [Bug 1965968] Re: post jammy update, black/flickering screen on boot

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

[Kernel-packages] [Bug 1965968] Re: post jammy update, black/flickering screen on boot

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? -- You received this bug notification because you are a member of Kernel Packages,

[Kernel-packages] [Bug 1965968] Re: post jammy update, black/flickering screen on boot

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). -- You received

[Kernel-packages] [Bug 1965968] Re: post jammy update, black/flickering screen on boot

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

[Kernel-packages] [Bug 1965968] Re: post jammy update, black/flickering screen on boot

both of those exhibit the bug. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1965968 Title: post jammy update, black/flickering screen on boot Status in linux package in Ubuntu:

[Kernel-packages] [Bug 1965968] Re: post jammy update, black/flickering screen on boot

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 -- You received this bug notification because you are a

[Kernel-packages] [Bug 1965968] Re: post jammy update, black/flickering screen on boot

i915.enable_psr=0 did not fix the black screen issue, but did appear to remove the flickering purple streaks, fwiw. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1965968 Title: post

[Kernel-packages] [Bug 1965968] Re: post jammy update, black/flickering screen on boot

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)