Re: [Qemu-devel] [PATCH] ati-vga: i2c fix

[Gerd Hoffmann]

On Wed, Mar 20, 2019 at 12:41:30PM +0100, BALATON Zoltan wrote:
> On Wed, 20 Mar 2019, Gerd Hoffmann wrote:
> > On Wed, Mar 20, 2019 at 12:32:42AM +0100, BALATON Zoltan wrote:
> > > On Mon, 18 Mar 2019, Gerd Hoffmann wrote:
> > > > > Does it work with the latest patch for you?
> > > > 
> > > > No (testing with radeonfb.ko).
> > > 
> > > I'm confused. You said here that it works with radeonfb with your patch:
> > > http://lists.nongnu.org/archive/html/qemu-devel/2019-03/msg04745.html
> > > and my patch should be the same but now you say it does not work. So can 
> > > it
> > > access EDID or not?
> > 
> > It works with my patch but doesn't with yours.
> > Didn't debug why, but apparently the logic is not the same ...
> 
> OK thanks, I'll check. What does it look like when you say it works? I've
> found radeonfb loaded with my patch too and it mentioned monitors connected
> but maybe you get something more?

If it works it comes up with 1024x768 (taken from edid blob),
if it doesn't work it comes up with 640x480.

There is also a pr_debug() in the radeonfb source code which
you can enable (or change to pr_info()).

HTH,
  Gerd