Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.kernel > #93580

Bug#1143161: linux-image-6.12.96+deb13-amd64: X does not start on DisplayPort of NVIDIA Quadro 600 with nouveau

Cross-posted to 2 groups.

Show all headers | View raw

Control: tags -1 + moreinfo

On Fri, Jul 31, 2026 at 02:28:51PM +0900, Takashi Yano wrote:
> Package: src:linux
> Version: 6.12.96-1
> Severity: normal
> Tags: patch
> X-Debbugs-Cc: debian-amd64@lists.debian.org
> User: debian-amd64@lists.debian.org
> Usertags: amd64
> 
> Dear Maintainer,
> 
>    * What led up to the situation?
>      When starting X on NVIDIA Quadro 600 DisplayPort, X does not start correctly
>      and does not show screen. I am using nouveau. This also happen with
>        Quadro 600 / 2000 / 4000
>        Quadro FX 1800
>      The issue does not happen if DVI output is used.
> 
>    * What exactly did you do (or not do) that was effective (or
>      ineffective)?
>      Using another mother board does not help.
>      After some effort, I found that the attached patch resolves the issue.
>      This essentially reverts a5a7379f6d9d ("drm/nouveau/kms/nv50-: split DP
>      disable+enable into two modesets") and adds a workaround for Quadro FX
>      1800.
> 
>    * What was the outcome of this action?
>      Without the patch, X does not start correctly, while it starts correctly
>      with the patch.
> 
>    * What outcome did you expect instead?
>      X starts correctly and the screen is shown up.

Can you please report the problem directly upstream and report here so
we can update the metadata?

Regards,
Salvatore

Back to linux.debian.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

Bug#1143161: linux-image-6.12.96+deb13-amd64: X does not start on DisplayPort of NVIDIA Quadro 600 with nouveau Salvatore Bonaccorso <carnil@debian.org> - 2026-08-04 07:30 +0200
  Processed: Re: Bug#1143161: linux-image-6.12.96+deb13-amd64: X  does not start on DisplayPort of NVIDIA Quadro 600 with nouveau "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-08-04 07:30 +0200
  Bug#1143161: linux-image-6.12.96+deb13-amd64: X does not start on DisplayPort of NVIDIA Quadro 600 with nouveau Takashi Yano <takashi.yano@nifty.ne.jp> - 2026-08-08 08:30 +0200
    Bug#1143161: linux-image-6.12.96+deb13-amd64: X does not start on DisplayPort of NVIDIA Quadro 600 with nouveau Salvatore Bonaccorso <carnil@debian.org> - 2026-08-17 21:20 +0200
      Bug#1143161: linux-image-6.12.96+deb13-amd64: X does not start on DisplayPort of NVIDIA Quadro 600 with nouveau Takashi Yano <takashi.yano@nifty.ne.jp> - 2026-08-19 02:10 +0200

csiph-web