Bug 20517

Summary:

LVDS output not detected

Product:

xorg

Reporter:

Tefnet <developers>

Component:

Driver/intel

Assignee:

MaLing <ling.ma>

Status:

RESOLVED NOTOURBUG

QA Contact:

Xorg Project Team <xorg-team>

Severity:

critical

Priority:

medium

CC:

developers, zhenyu.z.wang

Version:

7.4 (2008.09)

Hardware:

x86 (IA32)

OS:

Linux (All)

Whiteboard:

i915 platform:

i915 features:

Bug Depends on:

Bug Blocks:

20276

Attachments:

Description	Flags
xserver log file with a VGA display connected.	none
xserver log file with a VGA display connected and ModeDebug on.	none
Video BIOS before update - version 1.0.0	none
Video BIOS after update - version 1.2.0	none

Description Tefnet 2009-03-06 16:04:15 UTC

There is a problem running xorg server from git on a Toshiba Portege R200.

This machine has two video devices: LVDS internal display and external VGA output.

With 2.6.1 both outputs were detected correctly:

filip@cacko:~$ xrandr
Screen 0: minimum 320 x 200, current 2048 x 1280, maximum 2048 x 1280
VGA connected 1024x1280+768+0 right (normal left inverted right x axis y axis) 0mm x 0mm
   1360x768       59.8  
   1152x864       60.0  
   1024x768       60.0  
   800x600        60.3  
   640x480        59.9  
   1280x1024      60.0* 
LVDS connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1024x768       60.0*+   85.0     75.0     70.1     60.0  
   832x624        74.6  
   800x600        85.1     72.2     75.0     60.3     56.2  
   640x480        85.0     72.8     75.0     59.9  
   720x400        85.0  
   640x400        85.1  
   640x350        85.1  
TV disconnected (normal left inverted right x axis y axis)
filip@cacko:~$

But with 2:2.6.99.1+git2009030 (from https://launchpad.net/~xorg-edgers/+archive/ppa/) the LVDS output has disappeared:

filip@cacko:~$ xrandr
Screen 0: minimum 320 x 200, current 1024 x 1280, maximum 2048 x 1280
VGA connected 1024x1280+0+0 right (normal left inverted right x axis y axis) 0mm x 0mm
   1360x768       59.8  
   1152x864       60.0  
   1024x768       60.0  
   800x600        60.3  
   640x480        59.9  
   1280x1024      60.0* 
TV disconnected (normal left inverted right x axis y axis)
filip@cacko:~$ 


Without a VGA display connected the xserver refuses to run at all, because no connected output devices were found.

Some additional information:
filip@cacko:~$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu jaunty (development branch)
Release:	9.04
Codename:	jaunty
filip@cacko:~$ uname -a
Linux cacko 2.6.28-8-generic #28-Ubuntu SMP Thu Mar 5 21:49:36 UTC 2009 i686 GNU/Linux
filip@cacko:~$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 03)
filip@cacko:~$ 


I have upgraded to jaunty because of a new xorg intel driver which does acceleration on a rotated display (my VGA monitor).

Comment 1 Gordon Jin 2009-03-06 19:55:57 UTC

Please attach Xorg.0.log with ModeDebug enabled, according to http://intellinuxgraphics.org/how_to_report_bug.html.

This looks like bug#20230.

Comment 2 Tefnet 2009-03-07 01:34:48 UTC

Created attachment 23622 [details]
xserver log file with a VGA display connected.

Comment 3 Tefnet 2009-03-07 01:56:58 UTC

Created attachment 23623 [details]
xserver log file with a VGA display connected and ModeDebug on.

Comment 4 Tefnet 2009-03-07 02:14:23 UTC

My lid status is correct:

filip@cacko:~$ head /proc/acpi/button/lid/LID/*
==> /proc/acpi/button/lid/LID/info <==
type:                    Lid Switch

==> /proc/acpi/button/lid/LID/state <==
state:      open
filip@cacko:~$

Comment 5 Michael Fu 2009-03-08 21:39:08 UTC

pls attach your vbios rom via:

# cd /sys/devices/pci0000\:00/0000\:00\:02.0/
# echo 1 > rom
# cat rom > /tmp/rom.bin
# echo 0 > rom

then, attach the rom.bin. 

In the mean time, could you check on Toshiba website to see if there is a bios upgrade for this platform?

Comment 6 Tefnet 2009-03-09 02:24:30 UTC

Bios update fixed this. Thanks for the tip :).
I will attach two rom dumps (before update and after update).

Will a workaround be made for old bioses or will users be forced to perform bios update?
I am comfortable with this, but don't know about others...

Comment 7 Tefnet 2009-03-09 02:26:06 UTC

Created attachment 23679 [details]
Video BIOS before update - version 1.0.0

Comment 8 Tefnet 2009-03-09 02:26:53 UTC

Created attachment 23682 [details]
Video BIOS after update - version 1.2.0

Comment 9 Michael Fu 2009-03-11 04:41:29 UTC

(In reply to comment #6)
> Bios update fixed this. Thanks for the tip :).
> I will attach two rom dumps (before update and after update).
> 
> Will a workaround be made for old bioses or will users be forced to perform
> bios update?
> I am comfortable with this, but don't know about others...
> 

no. it's lucky for you to be able to find a bios upgrade..but this is really a fw problem...by deciphering the -before and -after confirms this. there is a tool called bios-reader under our driver source dir, if you are interested, you can try to compile and run that tool with the rom bin as argument

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