On Tue, 4 Aug 2026 07:21:36 +0200 Salvatore Bonaccorso <[email protected]> wrote:
> 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: [email protected] > > User: [email protected] > > 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? Thanks. Reported: https://bugzilla.kernel.org/show_bug.cgi?id=221852 -- Takashi Yano <[email protected]>
