[Bug 100233] [SKL] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]*ERROR* CPU pipe x FIFO underrun
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Tue Mar 28 16:26:58 UTC 2017
https://bugs.freedesktop.org/show_bug.cgi?id=100233
--- Comment #3 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
90/270 degree rotation via the display engine is a bit broken. There's one
patch on the list that we'd need to fix scaling vs. rotation, but at least the
watermarks need further fixing which I've not done.
Whether this case is actually rotating via the display engine or not I can't
say with any degree of certainty. I do see the kernel complaining about tiling
vs. rotation on the dmesg so at least userspace was attempting it, but whether
it eventually succeeded I can't say for sure.
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