| Summary: | enabling randr-1.2 support causes LVDS unknown config bits error when starting the X server | ||
|---|---|---|---|
| Product: | xorg | Reporter: | Travis M. <travisimo1993> |
| Component: | Driver/nouveau | Assignee: | Nouveau Project <nouveau> |
| Status: | RESOLVED FIXED | QA Contact: | Xorg Project Team <xorg-team> |
| Severity: | normal | ||
| Priority: | medium | ||
| Version: | git | ||
| Hardware: | x86 (IA32) | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
| Bug Depends on: | |||
| Bug Blocks: | 14405 | ||
| Attachments: | |||
Created attachment 14299 [details]
the hacked EDID file to make my LCD work properly under the propriatory nvidia driver (it works fine with nv and nouveau out-of-the-box)
I have the same issue on my very similiar Dell Insprion 8100 (The pentium 3-m version of the C840 with inspiron stamped on it). The machine also has a NV17 card (gf 4 go 440) with an unknown SXGA+ LCD (1400x1050), it does not require an edid hack or modeline for the nvidia blob, just an override to tell it to use the LCD instead of the vga output it defaults to. It fails with the same message when randr12 is enabled (works with it disabled): Raw DCB entry 0: 03000223 00000004 (EE) NOUVEAU(0): Unknown LVDS configuration bits, please report Created attachment 14311 [details]
X log with randr 1.2 enabled
Created attachment 14394 [details] [review] Patch to work around DCB v2.0 LVDS config bits issue See what happens with this patch applied Created attachment 14415 [details]
X.org with patch applied
Do you have any ModeLine, PreferredMode, HorizSync or VertRefresh lines in your Monitor section? I am guessing Option "ModeDebug" "yes" may help to find why it fails. d. Hi, can you confirm that the unknown LVDS config bits issue is now fixed? The LVDS config bits issue in question is fixed. Open a new bug if your laptop still doesn't work. |
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Created attachment 14298 [details] Xorg.0.log I am running Nouveau on a Dell Latitude C840 with an NVIDIA GeForce 4 440 Go which has 64MB of VRAM and AGP 4x. I am the unlucky owner of a C840 with a Samsung LCD that needs a hacked EDID to work properly with the nvidia driver (attached). My Linux kernel version is 2.6.24.1 and I am running Debian Testing (Lenny). Nouveau was compiled on 02/13/08 (today), and I removed the nvidia driver before installing it. I get this after enabling randr-1.2 support in the output of startx when it starts the X server: Raw DCB entry 0: 03000223 00000004 (EE) NOUVEAU(0): Unknown LVDS configuration bits, please report The X server fails to start because there are no valid video modes to pick from, so all the screens have a invalid configuration. Attached is a detailed Xorg log file that details the register dumps. lspci | grep -i vga: 01:00.0 VGA compatible controller: nVidia Corporation NV17 [GeForce4 440 Go] (rev a3)