Bug 33031 - r600 DPMS does not turn of backlight
Summary: r600 DPMS does not turn of backlight
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Radeon (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Default DRI bug account
QA Contact:
Depends on:
Reported: 2011-01-12 07:27 UTC by Chris Bandy
Modified: 2011-01-12 21:32 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

dmesg.log (63.99 KB, text/plain)
2011-01-12 07:27 UTC, Chris Bandy
no flags Details
Xorg.0.log (24.39 KB, text/plain)
2011-01-12 07:28 UTC, Chris Bandy
no flags Details

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]
Comment 2 Chris Bandy 2011-01-12 07:28:25 UTC
Created attachment 41926 [details]
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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