Created attachment 144627 [details]
dmesg output, from boot
The summary is the first error in the dmesg output when I run kaffeine, and a few seconds later, the video feed is sporadic, and a severe keyboard lock-up occurs. The system remains accessible via ssh when this happens.
The error seems repeatable. In this situation, kaffeine is receiving standard-definition over-the-air digital television, U.S. standard, and displaying it via an HDMI connection in a window controlled by the Xfce environment, under Fedora 29.
I'm using the graphics interface built into the Intel i5-2400 "Sandy Bridge" processor.
The kernel in effect is 5.1.11-200.fc29.x86_64. It also occurs on the two available prior kernels, 5.1.8 and 5.1.9, but for some reason, this bug seems to have popped up recently for me.
I seem to be limited to one attachment at this time, so I'll add more later. I may try to grab a dmesg with drm debug later.
Created attachment 144628 [details]
contents of /sys/class/drm/card0/error
Created attachment 144629 [details]
/var/log/Xorg.0.log, although it doesn't seem to be too useful
Created attachment 144630 [details]
gzipped debug dmesg
Dmesg with debug info was generated with kernel parameters "drm.debug=0x1e log_buf_len=1M", according to the instructions. Uncompressed size was less than 1M, so it seems to have everything.
rcs0 command stream:
HEAD: 0x00807180 [0x00007040]
head = 0x00007180, wraps = 4
TAIL: 0x000077e8 [0x00007180, 0x000071c8]
ACTHD: 0x00000000 01cc1f30
at ring: 0x00000000
busy: EU 12
busy: EU 11
busy: EU 10
busy: EU 02
busy: EU 01
busy: EU 00
batch: [0x00000000_03128000, 0x00000000_031a8000]
FADDR: 0x00000000 01cc2100
RC PSMI: 0x00000010
hangcheck timestamp: 0ms (4294790016; epoch)
engine reset count: 0
Active context: kaffeine user_handle 0 hw_id 0, prio 0, ban score 0 guilty 0 active 0
Stan, This is related to libva, can you please report this issue here https://github.com/intel/libva/issues.
Closing this issue as NOTOURBUG.