Bug 33031

Summary: r600 DPMS does not turn of backlight
Product: DRI Reporter: Chris Bandy <cbandy>
Component: DRM/RadeonAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED INVALID QA Contact:
Severity: normal    
Priority: medium    
Version: unspecified   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
dmesg.log
none
Xorg.0.log none

Description Chris Bandy 2011-01-12 07:27:05 UTC
When I issue `setterm -blank force` or `xset dpms force off` the laptop screen goes blank but the backlight does not turn off.

# lspci -vns 01:00.0
01:00.0 0300: 1002:68c1 (prog-if 00 [VGA controller])
        Subsystem: 103c:1449
        Flags: bus master, fast devsel, latency 0, IRQ 49
        Memory at c0000000 (64-bit, prefetchable) [size=256M]
        Memory at d4000000 (64-bit, non-prefetchable) [size=128K]
        I/O ports at 4000 [size=256]
        Expansion ROM at d4040000 [disabled] [size=128K]
        Capabilities: [50] Power Management version 3
        Capabilities: [58] Express Legacy Endpoint, MSI 00
        Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [100] Vendor Specific Information <?>
        Kernel driver in use: radeon
        Kernel modules: radeon

In the attached logs,

1. Booted without X
2. Ran # setterm -blank force ; sleep 5 ; setterm -blank poke
3. Started X
4. Ran $ xset dpms force off ; sleep 5 ; xset dpms force on
Comment 1 Chris Bandy 2011-01-12 07:27:58 UTC
Created attachment 41925 [details]
dmesg.log
Comment 2 Chris Bandy 2011-01-12 07:28:25 UTC
Created attachment 41926 [details]
Xorg.0.log
Comment 4 Chris Bandy 2011-01-12 21:32:29 UTC
Yes, this is fixed in gentoo-sources-2.6.37 for me.

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