Hi,
Yes, I can build custom kernels and test but I won't have time for that
before the end of September so I'll do it only then.
And thanks a lot :-).
--
i.
On Thu, 17 Sep 2020, Thomas Zimmermann wrote:
> Hi
>
> Am 08.07.20 um 12:05 schrieb Ilpo Järvinen:
> > Hi,
> >
> > After upgrading kernel from 5.3 series to 5.6.16 something seems to
> > prevent me from achieving high resolutions with the ast driver.
>
> Are you able to build and run a test kernel?
>
> I'm seriously considering moving ast to the SHMEM memory manager, which
> would restore the higher resolutions.
>
> If you're able to test, you need the git tree drm-tip/drm-tip and the
> attached patch.
>
> Alternatively, I've pushed all to
>
> https://gitlab.freedesktop.org/tzimmermann/linux/-/tree/ast-shmem
>
> You'd have to checkout the tree and switch to the ast-shmem branch.
>
> Please report back if that solves the issue for you.
>
> Best regards
> Thomas
>
> >
> > With 5.6.16:
> >
> > $ xrandr
> > Screen 0: minimum 320 x 200, current 1600 x 1200, maximum 1920 x 2048
> > VGA-1 connected primary 1600x1200+0+0 (normal left inverted right x axis y axis) 519mm x 324mm
> > 1600x1200 60.00*
> > 1680x1050 59.95
> > 1280x1024 75.02 60.02
> > 1440x900 59.89
> > 1280x800 59.81
> > 1024x768 75.03 60.00
> > 800x600 75.00 60.32
> > 640x480 75.00 59.94
> > 1920x1200_60.0 59.95
> >
> > If I try to change to that manually added high-res mode, I get:
> > xrandr: Configure crtc 0 failed
> >
> > With 5.3 series I've this:
> >
> > Screen 0: minimum 320 x 200, current 1920 x 1200, maximum 1920 x 2048
> > VGA-1 connected primary 1920x1200+0+0 (normal left inverted right x axis y axis) 519mm x 324mm
> > 1920x1200 59.95*+
> > 1600x1200 60.00
> > 1680x1050 59.95
> > 1280x1024 75.02 60.02
> > 1440x900 59.89
> > 1280x800 59.81
> > 1024x768 75.03 60.00
> > 800x600 75.00 60.32
> > 640x480 75.00 59.94
> > 1920x1200_60.0 59.95
> >
> > As I've had issues in getting EDID reliably from the monitor, I provide it
> > on kernel command-line (the one dumped from the monitor I use). In
> > addition, I've another workaround for past issues related to EDID which
> > always adds that 1920x1200_60.0 mode but now I cannot use even it to
> > enter a high-res mode.
> >
> > If you need some additional info or want me to test a patch, just let me
> > know (but some delay is expected in testing patches). Thanks.
> >
> >
>
>
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