Not booting with Linux 6.6.48 but still booting with 6.6.42

Hi,

Since the last system updates QubesOS doesn’t boot anymore with the new default Linux. After showing GRUB, instead of starting the boot process, the screen simply shows the blinking underline character and nothing else.

When I’m interrupting GRUB, I can navigate to the alternative boot entries and at least the second entry is still working (Linux 6.6.42).

  • Not booting: Qubes, with Xen 4.17.4 and Linux 6.6.48-1.qubes.fc37.x86_64
  • Still correctly booting: Qubes, with Xen 4.17.4 and Linux 6.6.24-1.qubes.fc37.x86_64

My current setup:

Brand: ASUS
CPU: AMD Ryzen 7 5800X 8-Core Processor
Chipset: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Root Complex [1022:1480]
Graphics: NVIDIA Corporation GP107 [GeForce GTX 1050 Ti] [10de:1c82] (rev a1) (prog-if 00 [VGA controller])
QubesOS version: R4.2.3
BIOS: 4002

Any suggestions on how to proceed here? What could be the root cause? How could this even be debugged?

Thanks!

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Same issue with a 22-core Intel CPU and nVidia GTX1080.

The older kernel(s) work, so I’m sticking with those. If the next kernel doesn’t work, then I’ll worry about it. ymmv

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Based on this:

The bug should be fixed in newer kernel.

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Thanks, @quantum and @apparatus . I really hope you are right.

On the one hand it indeed sounds logical. On the other hand it felt more severe than “just” a GPU issue because I couldn’t even reach another TTY during the blinking underline (e.g. by pressing CTRL + ALT + F2). I would expect that this should still be possible with such GPU issues.

Let’s see what will happen with the next update then. I’m planning to report back here.

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Tried the latest kernel, 6.10, but it has the same issue - boot stalls, so something else going on. Back to 6.6.42.

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Thanks for testing and reporting this here, @quantum .

Does anyone have a suggestion on how to troubleshoot this? Are there some kind of log files that we could check?

It seems to me that the OS is not started at that point yet but that the error occurs when GRUB tries to initiate the startup of the OS. So maybe we should try to collect some GRUB logs?

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Issue was reported here:

Building recent kernels with the reverted commit works for me.
I’m not sure when this will be fixed, for now I’ve been including a revert commit patch in my kernel builds and it’s worked perfectly on all recent releases.

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Issue is also present in kernel-latest 6.11.2-1

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Not booting with 6.6.54. Expected a nouveau issue would have been fixed asap, given the number of nVidia Linux users, so this delay is surprising.

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Still not working with 6.6.54 on one of my Nvidia desktops but the other one with an older Nvidia card has never had a problem

1 Like