Comment # 24
on bug 69120
from Chris Humbert
Created attachment 93075 [details]
cedar-3.13.1-dmesg
radeon.dpm=1 vdpau causes Cedar [HD 5450] to GPU lockup CP stall immediately.
The player hangs with a black window.
radeon.dpm=0 vdpau works very well.
01:00.0 VGA compatible controller: [AMD/ATI] Cedar [Radeon HD 5450]
Linux 3.13.1, xf86-video-ati 7.3.0, mesa 9.5
[ 107.875202] switching to power state:
[ 107.875203] ui class: none
[ 107.875204] internal class: uvd
[ 107.875206] caps: video
[ 107.875208] uvd vclk: 54000 dclk: 40000
[ 107.875210] power level 0 sclk: 65000 mclk: 40000 vddc: 1070
vddci: 0
[ 107.875212] power level 1 sclk: 65000 mclk: 40000 vddc: 1070
vddci: 0
[ 107.875213] power level 2 sclk: 65000 mclk: 40000 vddc: 1070
vddci: 0
[ 107.875214] status: r
[ 108.178542] [drm:cypress_dpm_set_power_state] *ERROR*
rv770_restrict_performance_levels_before_switch failed
[ 118.396040] radeon 0000:01:00.0: GPU lockup CP stall for more than 10068msec
[ 118.396046] radeon 0000:01:00.0: GPU lockup (waiting for 0x0000000000000004
last fence id 0x0000000000000002 on ring 5)
[ 118.545687] [drm:rv770_stop_dpm] *ERROR* Could not force DPM to low.
[ 118.545698] [drm] Disabling audio 0 support
[ 118.698386] radeon 0000:01:00.0: GPU reset succeeded, trying to resume
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