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

[David Gow <david@davidgow.net>]

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@skogtun.org> 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