Using a KabyLake Dell laptop and when connecting a monitor configuration that extends beyond 8192 pixels the display ends up being corrupted, even though xrandr reports that 32767x32767 is supported. I'm using Xorg 1.19.5 and Intel driver 2.99.917
Using a GL compositor or without? Please do check without. A photo showing how it corrupts will be very useful, as well as comparing a screen grab.
Without a compositor works fine, with and it breaks, Definitely a pitch problem.
Everything looks intact inside the ddx; left to its own devices a 10k pixel wide display is fine. Passing that to a GL compositor and it goes caput.
commit 0288fe8d0417730bdd5b3477130dd1dc32bdbcd3 Author: Nanley Chery <nanley.g.chery@intel.com> Date: Wed May 30 16:32:07 2018 -0700 i965/miptree: Use the correct BLT pitch Retile miptrees to a linear tiling less often. Retiling can cause issues with imported BOs. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106738 Suggested-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: <mesa-stable@lists.freedesktop.org> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Fix Confirmed on Ubuntu 1804. Follow the link on how to upgrade your Mesa on Ubuntu. https://www.linuxslaves.com/2018/10/mesa-1822-released-how-to-install-in-ubuntu-1804.html
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