Re: Call for tests: DRM fixes for upcoming NetBSD 10.1

[Staffan Thomen <staffan%shangtai.net@localhost>]

On 05.10 08:38, Rin Okuyama wrote:
> If you have GPU supported by our DRM-based drivers, and working 10.0
> (or 10.0_STABLE) userland, please try new kernel (**don't forget to
> backup your original kernel**):

I'm not sure if my Thinkpad X220 is eligible but so far it seems like
the linked kernel has fixed two problems;

 1. X11 get progressively slower after a few days of the system running
 2. occasional graphical glitches on the screen in X11, blank/random 
pixels or non-updating areas

Both of these problems seems to be completely gone. Hooray!

N.B. I run xcompmgr and AccelMethod in Xorg is set to SNA.

i915drmkms0 at pci0 dev 2 function 0: Intel Sandy Bridge (mobile) GT2+
Integrated Graphics Device (rev. 0x09)
[...]
[drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[drm] Driver supports precise vblank timestamp query.
i915drmkms0: interrupting at msi4 vec 0 (i915drmkms0)
[drm] Initialized i915 1.6.0 20200114 for i915drmkms0 on minor 0
entropy: best effort
intelfb0 at i915drmkms0
[drm] DRM_I915_DEBUG enabled
[drm] DRM_I915_DEBUG_GEM enabled
intelfb0: framebuffer at 0xe0005000, size 1920x1200, depth 32, stride 7680
{drm:netbsd:intel_cpu_fifo_underrun_irq_handler+0x64} *ERROR* CPU pipe A
FIFO underrun
{drm:netbsd:intel_check_pch_fifo_underruns+0xf4} *ERROR* pch fifo
underrun on pch transcoder A
wsdisplay0 at intelfb0 kbdmux 1: console (default, vt100 emulation),
using wskbd0

Staffan