Bug 70701
Summary: | With DPM enabled, Radeon 4570 (R710) doesn't remain in Single_Disp state | ||
---|---|---|---|
Product: | Drivers | Reporter: | Abhinav K (abhinav.kumar.in) |
Component: | Video(DRI - non Intel) | Assignee: | drivers_video-dri |
Status: | RESOLVED CODE_FIX | ||
Severity: | normal | CC: | alexdeucher |
Priority: | P1 | ||
Hardware: | x86-64 | ||
OS: | Linux | ||
Kernel Version: | 3.13 | Subsystem: | |
Regression: | No | Bisected commit-id: | |
Attachments: |
possible fix
Dmesg output after applying fix |
Description
Abhinav K
2014-02-17 08:49:18 UTC
Created attachment 126461 [details]
possible fix
Does the attached patch help? Can you attach the dmesg output with this patch applied?
Created attachment 126561 [details]
Dmesg output after applying fix
It worked. It's now remaining in single_disp power state unless I add an extra monitor. Just as should it work.
BTW Will I have to compile kernel with this fix every time or you will push it upstream?
Great. I'll push a fix upstream. Thanks for testing. Thanks a lot. I am seeing these vblank_time values. But everything seems fine with no screen blanking or screen artifacts. Clocks and temperature is also under control. [ 22.542092] tg3 0000:08:00.0 eth0: Link is up at 100 Mbps, full duplex [ 22.542096] tg3 0000:08:00.0 eth0: Flow control is on for TX and on for RX [ 22.542117] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready [ 24.364133] [drm] vblank_time: 294 [ 25.180308] [drm] vblank_time: 294 [ 1337.236122] [drm] vblank_time: 4294967295 [ 1337.340217] [drm] vblank_time: 4294967295 [ 1937.476218] [drm] vblank_time: 294 [ 1938.936214] [drm] vblank_time: 4294967295 [ 2537.836213] [drm] vblank_time: 294 [ 2539.296439] [drm] vblank_time: 4294967295 [ 7282.380994] perf samples too long (2502 > 2500), lowering kernel.perf_event_max_sample_rate to 50000 [11578.016133] [drm] vblank_time: 294 abhinav@abhinav-Mintk:~ > sudo cat /sys/kernel/debug/dri/64/radeon_pm_info uvd vclk: 0 dclk: 0 power level 0 sclk: 22000 mclk: 30000 vddc: 900 abhinav@abhinav-Mintk:~ > |