Re: GK107 10de:0fc1 Kepler regression: black screen when KMS enabled

Sérgio Basto <[email protected]>
Newsgroups gmane.linux.redhat.fedora.devel,gmane.linux.redhat.fedora.testers
Message-ID <[email protected]>
On Sun, 2024-12-15 at 18:15 -0500, Felix Miata wrote:
> Felix Miata composed on 2024-12-13 16:25 (UTC-0500):
> 
> > https://gitlab.freedesktop.org/drm/nouveau/-/issues/385
> > GK107 10de:0fc1 Kepler black screen when KMS enabled
> > No local I/O is possible once KMS engages.
> 
> > 6.11.11-300.fc41.x86_64 produces the same problem as all other
> > post-6.6 kernels.
> > 6.6.63 in Tumbleweed is working just dandy. No distros' current
> > kernels behave any
> > differently. There's been zero activity in that report other than
> > from myself. Can
> > anyone here suggest anything I can do to generate interest (that
> > does not include
> > me trying to bisect or build software) in providing a fix? Command
> > line option(s)
> > perhaps?
> 
> I've updated
> https://gitlab.freedesktop.org/drm/nouveau/-/issues/385 to indicate
> appropriate uses of video= on kernel cmdline can enable normal use of
> vttys. All
> displays are still put into sleep mode or into unsupported mode on X
> startup, but
> Ctrl-Alt-Fn succeeds to switch to available vttys.


Another option is use driver modesetting (man
/usr/share/man/man4/modesetting.4.gz ) 

We already have a patch on xorg-x11-server package that defaults all
GeForce 8 and newer to modesetting drive [1], chatgpt says: "Yes,
modesetting for the GK107 GPU (NVIDIA Kepler, 10de:0fc1) is possible"

[1]
https://src.fedoraproject.org/rpms/xorg-x11-server/blob/e3a0a54473c7d63df39467bdf0b093fedb25a962/f/0001-xfree86-use-modesetting-driver-by-default-on-GeForce.patch

> -- 
> Evolution as taught in public schools is, like religion,
> 	based on faith, not based on science.
> 
>  Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
> 
> Felix Miata

-- 
Sérgio M. B.
-- 
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