Control: severity -1 important
Control: reassign -1 src:linux 5.8.10-1
Control: retitle -1 nouveau no longer fails cleanly when firmware is missing
Debian does not include non-free software, including firmware. That's
not a bug. You will need to install firmware-misc-nonfree to make the
nouveau driver fully functional.
However, the driver ought to fail cleanly when firmware is missing. At
a minimum it should be possible to boot in text mode and then install a
firmware package if wanted.
> During a hung boot, I am able to SSH into the box to poke around and
> send this report.
[...]
> Oct 8 10:36:52 petrarca kernel: [ 14.118750] nouveau 0000:01:00.0: firmware: failed to load nvidia/gp107/nvdec/scrubber.bin (-2)
> Oct 8 10:36:52 petrarca kernel: [ 14.118753] firmware_class: See https://wiki.debian.org/Firmware for information about missing firmware
> Oct 8 10:36:52 petrarca kernel: [ 14.118760] nouveau 0000:01:00.0: firmware: failed to load nvidia/gp107/acr/bl.bin (-2)
> Oct 8 10:36:52 petrarca kernel: [ 14.118762] nouveau 0000:01:00.0: acr: failed to load firmware
> Oct 8 10:36:52 petrarca kernel: [ 14.118763] nouveau 0000:01:00.0: acr: failed to load firmware
> Oct 8 10:36:52 petrarca kernel: [ 14.118764] nouveau 0000:01:00.0: acr ctor failed, -2
> Oct 8 10:36:52 petrarca kernel: [ 14.118771] nouveau: probe of 0000:01:00.0 failed with error -2
I think that boot did complete, but without a working video driver.
nouveau may have disabled the basic video driver (probably efifb)
before attempting to load firmware and then finding that it can't take
over. Unfortunately the kernel doesn't have an API for re-enabling a
basic video driver.
There have been similar issues with the radeon and amdgpu drivers,
which we patch to guard against this failure mode. We might need to
apply a similar patch for nouveau.
Ben.
--
Ben Hutchings
[W]e found...that it wasn't as easy to get programs right as we had
thought. I realized that a large part of my life from then on was going
to be spent in finding mistakes in my own programs.
- Maurice Wilkes, 1949
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