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Groups > linux.debian.kernel > #72590

Bug#991941: linux: Don't use nouveau with Nvidia GeForce 8500 GT or alert in dmesg that firmware is needed

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Hello again

El 10 de agosto de 2021 2:56:01 CEST, Ben Hutchings <ben@decadent.org.uk> escribió:
>Control: tag -1 moreinfo
>
>On Fri, 2021-08-06 at 12:03 +0200, Laura Arjona Reina wrote:
>> Source: linux
>> Severity: normal
>> 
>> Dear Maintainer,
>> 
>> *** Reporter, please consider answering these questions, where 
>> appropriate ***
>> 
>>     * What led up to the situation?
>> 
>> I have installed Debian 11 (debian installer RC3) on a PC having a 
>> Nvidia GeForce 8500 GT as main graphics card.
>> The graphicall install process went well. After finishing the 
>> installation and reboot, I got a blank screen and "Input not supported" 
>> on my monitor.
>> I changed to tty2 and logged in, and saved the dmesg output (attached), 
>> I noticed that "nouveau" driver was loaded but there was no info about 
>> my card not supported or needing additional firmware.
>
>The missing firmware should have been fixed in installer RC3 *if* you
>use an installer image that includes firmware, but not if you use the
>default images.  Which did you use?
>

I used the official image without firmware but was expecting that using isenkram-autoinstall-firmware afterwards was equivalent.

>On the kernel side we should try to fix the blank screen with an
>earlier check for firmware in nouveau, similarly to the way we patch
>the amdgpu and radeon drivers.  (Although those patches now seem not to
>be completely effective.)
>
>>     * What exactly did you do (or not do) that was effective (or 
>> ineffective)?
>> 
>> I have rebooted and edited the "linux" line during Grub menu, to add 
>> "nomodeset" and then I could have a fallback graphics mode.
>> I have installed the isenkram-cli package and ran 
>> isenkram-autoinstall-firmware as suggested in the release notes and it 
>> installed firmware for my realtek card (unrelated) and 
>> firmware-misc-nonfree, but rebooting makes Linux pick the nouveau driver 
>> again.
>[...]
>
>Well that's expected.  The kernel driver and firmware are two different
>things that work together.  Installing the firmware should allow
>nouveau to work properly.
>
>Are you saying that even with firmware-misc-nonfree installed, you
>still get a black screen when you don't use "nomodeset"?
>

Exactly. 
At the end of August or beginning of September I can do an install using the image with firmware but I'll suspect that the results will be the same, because the needed firmware is not in Debian non-free either (card not supported in Bullseye). I think that nouveau should somehow output that message (card not supported) so the user gets a hint about what's happening.

Kind regards

-- 
Laura Arjona Reina
https://wiki.debian.org/LauraArjona
Sent with K-9 mail

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Bug#991941: linux: Don't use nouveau with Nvidia GeForce 8500 GT or alert in dmesg that firmware is needed Laura Arjona Reina <larjona@debian.org> - 2021-08-06 12:10 +0200
  Processed: Re: Bug#991941: linux: Don't use nouveau with Nvidia  GeForce 8500 GT or alert in dmesg that firmware is needed "Debian Bug Tracking System" <owner@bugs.debian.org> - 2021-08-10 03:20 +0200
  Bug#991941: linux: Don't use nouveau with Nvidia GeForce 8500 GT or alert in dmesg that firmware is needed Ben Hutchings <ben@decadent.org.uk> - 2021-08-10 03:20 +0200
    Bug#991941: linux: Don't use nouveau with Nvidia GeForce 8500 GT or alert in dmesg that firmware is needed Laura Arjona Reina <larjona@debian.org> - 2021-08-10 07:30 +0200

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