Hi, I'm testing the newest and greatest Xorg and mesa build for my ATI R500 card on a Thinkpad T60. Unfortunately it looks like I can't switch the LCD panel of this notebook off. The driver disables it - but re-enables it right after that again (to blank it). Xorg.0.log: [...] Output 23 disable success Blank CRTC 0 success Disable CRTC 0 success Blank CRTC 1 success Disable CRTC 1 success Output 23 disable success Blank CRTC 0 success Disable CRTC 0 success Enable CRTC 0 success Unblank CRTC 0 success Output 23 enable success Please note the second "Blank CRTC 0 success" after "Output 23 disable success". I think (but I'm not sure) that this is what I see as "re-enabled screen" right?
by the way ... cat /proc/version Linux version 2.6.26-gentoo (root@loki) (gcc version 4.1.2 (Gentoo 4.1.2 p1.1)) #1 SMP Thu Jul 17 21:11:42 CEST 2008 lspci -v 01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility X1400 (prog-if 00 [VGA controller]) Subsystem: Lenovo Thinkpad T60 model 2007 Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at d8000000 (32-bit, prefetchable) [size=128M] I/O ports at 2000 [size=256] Memory at ee100000 (32-bit, non-prefetchable) [size=64K] [virtual] Expansion ROM at ee120000 [disabled] [size=128K] Capabilities: [50] Power Management version 2 Capabilities: [58] Express Legacy Endpoint, MSI 00 Capabilities: [80] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
You're probably getting late input from the mouse which wakes up the screen immediately. try calling it this way: sleep 5; xset dpms force off
That's an interesting idea but it's not the case. It even happens if the notebook is not used and regular DPMS settings take effect. It could be related to KDE 4.0.5 but switching to xf86-video-radeonhd resolves the issue. That's why I think it's driver related. Please let me know how to help you tracking down this issue.
Can you at least try it and see if it works? From your log the screen is blanked and then immediately unblanked. Something external is causing the screen to unblank. My guess is some acpi or input event.
I'm sorry. I forgot to write that I tested it even with sleep 10 and it didn't worked.
I think it was actually xserver issue that has already been fixed.
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