Need help: vertical screen rotation!

[Martin Flöser]

Am 2017-11-07 20:11, schrieb Martin Flöser:
> Am 2017-11-07 19:03, schrieb Sebastian Kügler:
>> On dinsdag 7 november 2017 18:28:40 CET Martin Flöser wrote:
>>> > upside down works, 90 and 270 do nothing on my system.
>>> >
>>> > Debian Unstable
>>> > Linux manta 4.13.0-1-amd64 #1 SMP Debian 4.13.4-1 (2017-10-01)
>>> > x86_64 GNU/ Linux
>>> >
>>> > 00:02.0 VGA compatible controller: Intel Corporation HD Graphics 620
>>> > (rev 02)
>>> >
>>> > I think above satisfies the requirements for AMS? Anything I can
>>> > test?
>>> 
>>> What about XRandr? Does XRandR support 90 or 270 on your system?
>> 
>> Yup, that works.
> 
> meh, my assumption was that if we have rotation on XRandR, we get the
> same rotations on DRM. So either my code doesn't work for rotation or
> we need to rotate the crtc instead of the plane. Can you try the
> supportedTransformations patch and check the debug output which
> rotations are supported for the planes?

For the record: while working on the X11 side I noticed that XRandR 
supports all rotations as well. Thus I have a system where I can further 
investigate.

Cheers
Martin