GPU HANG: ecode 7:1:0xfffffffe, in Xwayland [2363], hang on rcs0

Hello, I'm having frequent crashes:

• both under xorg + i3 and xwayland 1.20.6 + sway 1.2
• both with and without lightdm
• on Debian Unstable
• kernel 5.3.0-2-amd64 and 5.2

lspci | grep -i --color 'vga\|3d\|2d'
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)

[14843.720520] i915 0000:00:02.0: GPU HANG: ecode 7:1:0xfffffffe, in Xwayland [2363], hang on rcs0
[14843.720522] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
[14843.720523] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
[14843.720523] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
[14843.720524] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.
[14843.720525] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[14843.720743] i915 0000:00:02.0: Resetting chip for hang on rcs0
[14852.157330] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* uncleared pch fifo underrun on pch transcoder B
[14852.157392] [drm:cpt_irq_handler [i915]] *ERROR* PCH transcoder B FIFO underrun
[14852.160756] [drm:intel_check_cpu_fifo_underruns [i915]] *ERROR* fifo underrun on pipe B
[14863.730288] [drm:intel_check_cpu_fifo_underruns [i915]] *ERROR* fifo underrun on pipe B
[14866.722194] psmouse serio1: synaptics: queried max coordinates: x [..5678], y [..4732]
[14866.753113] psmouse serio1: synaptics: queried min coordinates: x [1264..], y [1124..]
[14878.849539] [drm:intel_check_cpu_fifo_underruns [i915]] *ERROR* fifo underrun on pipe B

/sys/class/drm/card0/error

Please let me know if you need more info.