Comment # 294
on bug 66963
from Kyle K
Hello, I have been having problem with my HD6870 for some time. I experienced it on 4.7/4.8/4.9 kernels (haven't tested earlier). My HD6870 works great out of the box with DPM enabled, I do not have any issues for general use. I do have a problem with applications that put heavier load on GPU, for example MPV with hw acceleration enabled. My R600 tries to upclock from 300Mhz base d efault but fails with: Apr 21 00:34:22 xenon kernel: [drm:btc_dpm_set_power_state [radeon]] *ERROR* rv770_restrict_performance_levels_before_switch failed Apr 21 00:34:33 xenon kernel: [drm:btc_dpm_set_power_state [radeon]] *ERROR* rv770_restrict_performance_levels_before_switch failed I can reproduce this every time with: $ mpv --hwdec=vdpau --vo=vdpau <foo.mkv> The video playback follows but it is very choppy as you would imagine. Attempting to use VAAPI pipeline for hw decoding results in hard system crash with blank screen after just few seconds of playback. I can reproduce it always with: $ mpv --hwdec=vaapi --vo=vaapi <foo.mkv> I'm booting with radeon.dpm=0 as a workaround, vdpau hw decoding is butter smooth and playback in mpv is very reliable, however temps and noise is not as great :( I used to run Arch on latest 4.10 kernel but recently I'm playing around with Solus so I'm on 4.9.22, here are stock settings with DPM enabled on Solus system that I have this problem: root@xenon /home/kyle # cat /proc/version Linux version 4.9.22-17.lts (root@solus-build-server) (gcc version 6.3.0 (Solus) ) #1 SMP Sat Apr 15 06:05:30 UTC 2017 root@xenon /home/kyle # grep . /sys/module/radeon/parameters/* /sys/module/radeon/parameters/agpmode:0 /sys/module/radeon/parameters/aspm:-1 /sys/module/radeon/parameters/audio:-1 /sys/module/radeon/parameters/auxch:-1 /sys/module/radeon/parameters/backlight:-1 /sys/module/radeon/parameters/bapm:-1 /sys/module/radeon/parameters/benchmark:0 /sys/module/radeon/parameters/connector_table:0 /sys/module/radeon/parameters/deep_color:0 /sys/module/radeon/parameters/disp_priority:0 /sys/module/radeon/parameters/dpm:-1 /sys/module/radeon/parameters/dynclks:-1 /sys/module/radeon/parameters/fastfb:0 /sys/module/radeon/parameters/gartsize:1024 /sys/module/radeon/parameters/hard_reset:0 /sys/module/radeon/parameters/hw_i2c:0 /sys/module/radeon/parameters/lockup_timeout:10000 /sys/module/radeon/parameters/modeset:1 /sys/module/radeon/parameters/msi:-1 /sys/module/radeon/parameters/mst:0 /sys/module/radeon/parameters/no_wb:0 /sys/module/radeon/parameters/pcie_gen2:-1 /sys/module/radeon/parameters/r4xx_atom:0 /sys/module/radeon/parameters/runpm:-1 /sys/module/radeon/parameters/test:0 /sys/module/radeon/parameters/tv:1 /sys/module/radeon/parameters/use_pflipirq:2 /sys/module/radeon/parameters/uvd:1 /sys/module/radeon/parameters/vce:1 /sys/module/radeon/parameters/vm_block_size:12 /sys/module/radeon/parameters/vm_size:8 /sys/module/radeon/parameters/vramlimit:0 root@xenon /home/kyle # md5sum /lib/firmware/radeon/R600_* f2432caf487c4b586a2c391435f3749c /lib/firmware/radeon/R600_me.bin 448dbf1df580c31a0e55de22bb076be3 /lib/firmware/radeon/R600_pfp.bin f74a5163948bde215be6b689ca24afde /lib/firmware/radeon/R600_rlc.bin 9bc76ae83f9326debf728f98803a7e11 /lib/firmware/radeon/R600_uvd.bin libdrm, version: 2.4.76, release: 16 Alex, I do not know if you're still keeping eye on this Bug but your attention and effort would be hugely appreciated! Thank you
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