Re: OldWorld ROM Macintoshes

On 9/18/25 9:13 PM, Cedar Maxwell wrote:
> On 9/15/25 10:25 AM, Stan Johnson wrote:
>> Cedar,
>>
>> Are you able to confirm that installing xserver-xorg-video-mach64 allows
>> X11 to work on your Wallstreet (passing the correct "video=atyfb..."
>> argument and unchecking "No video driver" in BootX)?
> 
> I already had xserver-xorg-video-mach64 installed, but Adrian's
> suggestion of using "video=atyfb:off" from that old thread I linked
> previously seems to have done the trick.  

You appear to be running kernel 6.1.0-9-powerpc #1 Debian 6.1.27-1
(2023-05-08) ppc. That may fall in the range of kernels that had an
earlier issue on Wallstreet systems. In my tests, stock kernel 6.2-rc1
worked, using either "video=atyfb ..." or "video=ofonly".

> "No video driver" was unchecked.  

So the kernel would have received "video=ofonly" from BootX.

> I am experiencing graphical errors, but mach64 appears to be
> working according to my Xorg.0.log.  Attached are screenshots and logs.
> 
>> I still think there's a kernel regression that is preventing
>> "video=ofonly" from working. I plan to follow up later this week if I
>> still haven't heard back from a developer.
> Video=atyfb, fbdev, etc., nothing works either for me.
...

Using which kernel?

You should find that 6.2-rc1 works for video=ofonly but 6.2-rc8 does
not. The latest stock kernel should reach a text login using
video=atyfb, but the screen freezes using video=ofonly (same as
6.2-rc8). Even though the screen freezes at the BootX screen, the system
hasn't hung; it continues to boot and is eventually be accessible over
the network (assuming you have a network configured in your rootfs). I
don't think the relevant kernel developer(s) will care that atyfb
(Mach64) isn't working (probably an Xorg issue), but I identified the
kernel commit that seems to have caused video=ofonly to stop working on
the Wallstreet. I'm still waiting for a response; I'll escalate further
early next week if I don't hear anything back by then.