Bug 37762
| Summary: | No display when resuming on HP DV6 dual radeon laptop | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Johan Brannlund (kernel-bugs) |
| Component: | Video(DRI - non Intel) | Assignee: | drivers_video-dri |
| Status: | RESOLVED OBSOLETE | ||
| Severity: | normal | CC: | alan, kernel-bugs, Schnuff_Forum |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.38 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
syslog from suspend/resume cycle
acpidump output |
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As a test, I tried doing # echo core > /sys/power/pm_test # echo mem >/sys/power/state and the display comes back like it's supposed to. Created attachment 70162 [details]
acpidump output
If this is still present in modern kernels please update the bug |
Created attachment 62612 [details] syslog from suspend/resume cycle When resuming from suspend-to-ram on a HP DV6 3167-ca laptop, the display does not come back to life, although everything else seems to work - I can type blind and reboot the machine etc. This laptop has two radeon cards: $ lspci -vnn |grep VGA 01:05.0 VGA compatible controller [0300]: ATI Technologies Inc M880G [Mobility Radeon HD 4200] [1002:9712] (prog-if 00 [VGA controller]) 02:00.0 VGA compatible controller [0300]: ATI Technologies Inc Redwood [Radeon HD 5600 Series] [1002:68c1] (rev ff) (prog-if ff) vgaswitcheroo works as expected and the power settings in /.../vgaswitcheroo/switch do not affect the outcome (i.e. display dead after resume). The suspend is done when running on the 4200 series card. I am attaching a syslog. The line kernel: [ 191.930153] radeon 0000:02:00.0: Refused to change power state, currently in D3 appears to be the smoking gun. This is on Ubuntu Natty, which runs a kernel based on 2.6.38. However, Chris (who I'm including on this bug) has the same type of laptop. He has tried with various mainline kernels, including 3.0-rc kernels and gets the same result. Also, he said resume *does* work with the latest ATI proprietary driver.