On Mon, Nov 8, 2010 at 2:53 PM, Jon Senior <[email protected]> wrote: > Hi, > > I swapped out the LCD panel in my Thinkpad T60 today to resolve a > backlight issue (pink tint). The new display works fine, X seems to > detect it OK, but when I plug in my external monitor it all goes wrong. > When xrandr starts probing, the internal panel loses the picture. The > backlight remains on, and according to xrandr I should have an image, > but the screen remains black. xrandr reports the exact same resolutions > for both displays, although the internal one 1024x768 and the external > one 1280x1024. The chip is a Mobility Radeon x1300, the new panel is a > like-for-like replacement (or as close as they ever get in laptop > world!). The lines below appear in Xorg.0.log (sadly I don't have a > backup of a log file pre-dating the upgrade so I can't compare (And I > don't fancy taking the laptop screen apart again!). > > They appear to show that the graphics chip is failing to retrieve the > EDID information from the internal LCD and using either some internal > default (with no external device) or the data from the external device > (when connected). > > Any ideas? Any suggestions?
Please file a bug: https://bugs.freedesktop.org and attach your full xorg log, config, and dmesg output. Alex > > Jon Senior > > ------------- > > (II) RADEON(0): Output VGA-0 has no monitor section > (II) RADEON(0): I2C bus "VGA-0" initialized. > (II) RADEON(0): Output LVDS has no monitor section > (II) RADEON(0): I2C bus "LVDS" initialized. > (II) RADEON(0): Output DVI-0 has no monitor section > (II) RADEON(0): I2C bus "DVI-0" initialized. > (II) RADEON(0): Port0: > XRANDR name: VGA-0 > Connector: VGA > CRT1: INTERNAL_KLDSCP_DAC1 > DDC reg: 0x7e40 > (II) RADEON(0): Port1: > XRANDR name: LVDS > Connector: LVDS > LCD1: INTERNAL_LVTM1 > DDC reg: 0x7e40 > (II) RADEON(0): Port2: > XRANDR name: DVI-0 > Connector: DVI-I > DFP1: INTERNAL_KLDSCP_TMDS1 > DDC reg: 0x7e50 > (II) RADEON(0): I2C device "VGA-0:ddc2" registered at address 0xA0. > Dac detection success > (II) RADEON(0): Output: VGA-0, Detected Monitor Type: 0 > finished output detect: 0 > (II) RADEON(0): I2C device "LVDS:ddc2" registered at address 0xA0. > (II) RADEON(0): Output: LVDS, Detected Monitor Type: 2 > finished output detect: 1 > (II) RADEON(0): I2C device "DVI-0:ddc2" registered at address 0xA0. > (II) RADEON(0): Output: DVI-0, Detected Monitor Type: 0 > Unhandled monitor type 0 > finished output detect: 2 > finished all detect > before xf86InitialConfiguration > Dac detection success > > ------------- > _______________________________________________ > xorg-driver-ati mailing list > [email protected] > http://lists.x.org/mailman/listinfo/xorg-driver-ati > _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
