| Summary: | 6.9.0 regression: r128 on laptop now ignores modeline settings for external display, and picks LCD settings | ||||||
|---|---|---|---|---|---|---|---|
| Product: | xorg | Reporter: | Tim Connors <tim.w.connors> | ||||
| Component: | Driver/rage128 | Assignee: | Xorg Project Team <xorg-team> | ||||
| Status: | RESOLVED FIXED | QA Contact: | Xorg Project Team <xorg-team> | ||||
| Severity: | normal | ||||||
| Priority: | high | CC: | alexdeucher, erik.andren | ||||
| Version: | 6.9.0 | Keywords: | regression | ||||
| Hardware: | x86 (IA32) | ||||||
| OS: | Linux (All) | ||||||
| URL: | http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=348873 | ||||||
| Whiteboard: | |||||||
| i915 platform: | i915 features: | ||||||
| Attachments: |
|
||||||
|
Description
Tim Connors
2006-02-07 12:11:38 UTC
Can you attach your log and config? Created attachment 5306 [details] Log file showing modeline which are ignored despite being valid As I mentioned originally, the attached URL showed the config and logfile: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=348873 I just tried again with an updated X -- config file hasn't changed, new logfile is attached here. Added regression keyword Sorry about the phenomenal bug spam, guys. Adding xorg-team@ to the QA contact so bugs don't get lost in future. I am having the same problem: my Dell laptop with a 1600x1200 flat panel screen would not drive an external monitor because it picks frequencies for the flat panel screen, which are too high for the external monitor. As it does this it ignores the explicit modelines I specify for the external monitor. I am using Mandriva 2007.1 with 'X Window System Version 7.2.0' (from Mandriva RPM packages x11-server-xorg-1.2.0-9.2mdv2007.1, x11-driver-video-ati-6.6.3-1mdv2007.1 and a few more), and kernel 2.6.17-13mdv. With previous setups I did not have this problem; unfortunately I don't know at what point the bug appeared. In /var/log/Xorg.0.log I have lines saying e.g. > (II) R128(0): Not using driver mode "1440x900" (no mode of this name) Also, I get lines like > Modifying mode according to VBIOS: 1400x1050 [pclk 122.0 MHz] for FP to: 1400x1050 [pclk 160.0 MHz] which seems to be an indication that this might be a video BIOS interaction problem... Is there any way to tell the r128 driver to override/ignore the video BIOS information? This VBIOS override happens even for the 'standard' modes, like 1280x1024@75Hz, let alone the 1440x900 I am really after... ZJ Laczik has discovered that a simple change to src/r128_driver.c:R128ValidMode() to return MODE_OK unconditionally is enough to make the external display work for the both of us. This tells us that info->DisplayType == MT_LCD. I don't know whether this is being set in R128GetBIOSParameters(), but if so, then obviously info->HasPanelRegs is true. Judging from the comment above that, the author of this code is not convinced this is the right detection logic to use, and quite clearly, it is invalid on a laptop which has panel registers, but is being asked not to use them when one of Option "nopanel_display" "true" Option "Display" "CRT" etc are used. Can we just go back to the detection logic that was in xorg prior to 6.9? It worked well enough then. Or maybe query whether such a CRT option has been provided (it is unclear in the docs which one to use -- Option "Display" "CRT" worked for me prior to 6.9 if I understand my xorg.conf CVS history properly) The code was changed to support dualhead. I'll see if I can fix it up at some point this week. fixed: 18b00b47a483e7854727e99126808ddf361e7a4a please reopen if you are still having problems. |
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.