[Bug 1123538] New: Kernel panic while booting from Net & DVD ISO
http://bugzilla.suse.com/show_bug.cgi?id=1123538 Bug ID: 1123538 Summary: Kernel panic while booting from Net & DVD ISO Classification: openSUSE Product: openSUSE Distribution Version: Leap 15.1 Hardware: x86-64 OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Installation Assignee: yast2-maintainers@suse.de Reporter: vinz@vinzv.de QA Contact: jsrain@suse.com Depends on: 1123523 Found By: --- Blocker: --- In the aftermath of #1123523 I tried Build402.2 on the same device but ran into a Kernel panic. The green progress bar at the bottom starts loading normally but suddenly at 3/4 stops and switching to TTY2 (before the bar stops) shows a kernel panic. The device is equipped with: - Core i7-8750H - GTX1060 (Optimus) - Ultra-HD display (3840 x 2160px) -- You are receiving this mail because: You are on the CC list for the bug.
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--- Comment #1 from Stefan Hundhammer
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--- Comment #2 from Stefan Hundhammer
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--- Comment #6 from Vinzenz Vietzke
Did this work with previous builds on that same hardware?
I haven't tried with earlier 15.1 builds but with 15.0 it *somehow* works, see below.
If you can boot any of the previous builds (or any not too old SUSE distro), can you please attach the output of "hwinfo" from any of those builds?
Here's the thing: We preinstall Leap 15.0 on this machine not via ISO but via FAI (fai-project.org). I tried with the latest ISO which froze just like the Leap 15.1 builds. So I ran our FAI based installation which worked and pulled out hwinfo. -- You are receiving this mail because: You are on the CC list for the bug.
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--- Comment #7 from Vinzenz Vietzke
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--- Comment #8 from Steffen Winterfeldt
http://bugzilla.suse.com/show_bug.cgi?id=1123538 Bug 1123538 depends on bug 1123523, which changed state. Bug 1123523 Summary: Booting from Net ISO stops http://bugzilla.suse.com/show_bug.cgi?id=1123523 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |DUPLICATE -- You are receiving this mail because: You are on the CC list for the bug.
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Steffen Winterfeldt
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Steffen Winterfeldt
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--- Comment #10 from Stefan Dirsch
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--- Comment #11 from Stefan Dirsch
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--- Comment #12 from Vinzenz Vietzke
i915.modeset=0 nouveau.modeset=0
instead of option 'nomodeset'.
nomodeset gave the same results with my tries yesterday. Leap 15.0 + nouveau.modeset=0: works Leap 15.0 + i915.modeset=0: freeze Leap 15.1 Build402.2 + nouveau.modeset=0: works (and scales fine, btw. woohoo!) Leap 15.1 Build402.2 + i915.modeset=0: kernel panic So, yes, this seems to be a problem with nouveau. -- You are receiving this mail because: You are on the CC list for the bug.
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Stefan Dirsch
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Stefan Dirsch
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Stefan Dirsch
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Stefan Dirsch
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--- Comment #23 from Takashi Iwai
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--- Comment #25 from Takashi Iwai
Yes, it looks like the Nouveau driver tries to access hardware registers that is powered off. This usually causes a freeze on the running cpu thread. But I don't know why this is happening.
As far as I understand, this is a stall in the loop of nvkm_msec() reading the register. It should have been timed out, but the GPU timer itself seems stalling, hence it spins forever. The upstream seems to have a GPU timer stall check in the commit e4f90a35c9668f8d0469a0160482b1856d07c2b5, so this might help for avoiding such a complete hangup, at least. I'm going to build a test kernel including this fix. -- You are receiving this mail because: You are on the CC list for the bug.
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Takashi Iwai
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--- Comment #27 from Vinzenz Vietzke
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--- Comment #28 from Takashi Iwai
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--- Comment #29 from Vinzenz Vietzke
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--- Comment #30 from Takashi Iwai
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--- Comment #31 from Vinzenz Vietzke
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--- Comment #32 from Vinzenz Vietzke
OK, that's good to hear. Could you give the dmesg output from the patched kernel?
I pushed the fix to SLE15 branch now, since this bug hits also Leap 15.0 as well. This will be merged into SLE15-SP1 / Leap 15.0 branch eventually later.
Sure thing. Thank you very much for your help! -- You are receiving this mail because: You are on the CC list for the bug.
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Takashi Iwai
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--- Comment #34 from Swamp Workflow Management
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--- Comment #35 from Swamp Workflow Management
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