Ilia Mirkin, Wed, Feb 24, 2021 17:57:41 +0100:
On Wed, Feb 24, 2021 at 11:53 AM Alex Riesen alexander.riesen@cetitec.com wrote:
Ilia Mirkin, Wed, Feb 24, 2021 17:48:39 +0100:
Just to be crystal clear -- are you saying that 128x128 works or does not work? (You said "yes", which would imply it works OK, but then you said both cases, which would imply doesn't work since 256x256 doesn't work?)
Modetest with 128x128 cursor works. Without damage to the cursor: modetest shows normal cursor in vanilla v5.11. Modetest also shows normal cursor in vanilla v5.11 with the commit reverted.
But modetest with 256x256 doesn't work (correctly) right? Or did I misunderstand?
Right. That's why I was asking if I did everything right: it was just corrupted in both kernels.
All the patch does is allow those large cursors to be used, which gets reported via drm APIs and modesetting picks the largest cursor available. (And actually I think it's even not required to use the large cursors, it just controls what's reported in the defaults to userspace.)
Maybe something in X code is not prepared to handle the kernel reporting large cursor support? Even though 128x128 is pretty large, and I don't think I even use that large cursors in X configuration. How can I check?