| Summary: | [R600] LCD panel black (backlight on) with VGA screen plugged | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Product: | xorg | Reporter: | BBT <babataz> | ||||||||||||
| Component: | Driver/Radeon | Assignee: | xf86-video-ati maintainers <xorg-driver-ati> | ||||||||||||
| Status: | RESOLVED FIXED | QA Contact: | Xorg Project Team <xorg-team> | ||||||||||||
| Severity: | normal | ||||||||||||||
| Priority: | medium | CC: | babataz | ||||||||||||
| Version: | 7.5 (2009.10) | ||||||||||||||
| Hardware: | Other | ||||||||||||||
| OS: | All | ||||||||||||||
| Whiteboard: | |||||||||||||||
| i915 platform: | i915 features: | ||||||||||||||
| Attachments: |
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Created attachment 33728 [details]
Xorg log
Does xf86-video-ati from git master or 6.12.5 work any better? Created attachment 33729 [details]
gdb trace with VGA screen unplugged
This trace is included for reference,
this is case 1 where xrandr works properly.
Created attachment 33730 [details]
gdb trace for VGA unplugged
VGA unplugged during process (correcting mistake)
Created attachment 33731 [details]
gdb trace for VGA plugged after initialization
(In reply to comment #2) > Does xf86-video-ati from git master or 6.12.5 work any better? > I'm testing with libdrm-radeon1 (2.4.17-1) and xserver-xorg-video-radeon (1:6.12.99+git20100201.a887818f-1) from Debian/experimental. Same behaviour here (but it seems faster ;) ) Fixed with upgrade of xserver-xorg-video-radeon from 1:6.12.99+git... to 1:6.12.192-2 and disabling KMS in /etc/modprobe.d/radeon-kms.conf. |
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Created attachment 33727 [details] Xorg.conf OS: Debian/testing linux-image-2.6.32-trunk-686 = 2.6.32-5 firmware-linux-nonfree = 0.22 xserver-xorg-video-radeon = 1:6.12.4-2 xserver-xorg = 1:7.5+3 xserver-xorg-core = 2:1.7.5-1 x11-xserver-utils = 7.5+1+b1 Chipset: ATI Radeon Xpress 1250 (RS600M or RS690M ?) Laptop: Samsung R20 I can't have dual head setup (LVDS/VGA-0), LCD panel becomes black (with backlight on, xrandr thinks it is on and normal) at any xrandr operation I tried. == Test Cases == 1- boot without VGA plugged xrandr works properly, no black screen. 2- boot with VGA plugged VGA works correctly, LCD panel is black. xrandr works. 3- boot without VGA plugged, VGA is plugged after initialization is complete LCD panel works, VGA is not used. Typing "xrandr" make the LCD panel become black, nothing happens on VGA. for case 3, I investigated a little on xrandr, the blanking happens on XRRGetScreenRessources(dpy, root) in xrandr.c:1086. gdb traces following for xrandr context when XRRGetScreenRessources is called.