Re: [BISECTED]: Black screen on 7.0-rc1

[David Gow]

Le 28/02/2026 à 3:22 PM, Thorsten Leemhuis a écrit :
> On 2/26/26 05:08, David Gow wrote:
> > Le 25/02/2026 à 12:57 AM, Linus Torvalds a écrit :
> > > On Mon, 23 Feb 2026 at 23:59, Harald Arnesen <linux@xxxxxxxxxxx> wrote:
> > > > > > > In fact, I would expect it to be related to one (or both) of
> > > > > > >        f2ae92780ab9 ("firewire: ohci: split page allocation from
> > > > > > >        993ab48006b3 ("firewire: ohci: stop using page private to store >>>>>> dma mapping")
> > > > > > Should I try reverting one or both of these?
> > > > > Yes. From a quick check, they revert cleanly (revert 993ab48006b3
> > > > > first) and the result seems to compile cleanly too.
> > > > I can confirm that the kernel boots with these two reverted.
> > > > I have attached the new dmesg output.
> > > Thanks. I guess it's up to Takashi to figure out what exactly goes
> > > wrong, but it's good to have this confirmed. I hope you'll be willing
> > > to test any patches that Takashi comes up with.
> > > And if we can't figure it out, I guess reverting them is the right
> > > thing, but let's wait until at least rc2 is imminent before we do
> > > that.
> > I am also seeing this, and can confirm that reverting the whole firewire
> > pull fixes it here.
>
> TWIMC, John ran into a problem with mentioned f2ae92780ab9 commit that
> from a brief look looks similar to the one Harald reported. And Takashi
> posted a fix for it here:
> https://lore.kernel.org/lkml/20260228031255.GA832746@workstation.local/
>
> Not sure why Takashi did not reply here. Feels a bit like I'm missing
> something.

Thanks, that patch indeed fixes it for me, too.

-- David