[Bug 18395] New: [IGP 320M] No internal/LVDS detected (regression since 6.6 .3)

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=18395

           Summary: [IGP 320M] No internal/LVDS detected (regression since
                    6.6.3)
           Product: xorg
           Version: 7.4
          Platform: x86 (IA32)
               URL: https://bugs.edge.launchpad.net/ubuntu/+source/xserver-
                    xorg-video-ati/+bug/190857
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: bryce at canonical.com
         QAContact: xorg-team at lists.x.org


Created an attachment (id=20087)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=20087)
Xorg.0.log from Intrepid Alpha 4

Forwarding this bug from a Ubuntu reporter:
https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/190857

[Problem]
The LVDS on this system is not detected on the laptop.  The external VGA can be
made to work by adding modes to it.

[Original Report]
On HP4300 laptop with ATI IGP 320M card, the current xserver-xorg-video-ati
package fails to find the internal/LVDS screen. I've had to switch the
MonitorLayout in the past but under Gutsy it doesn't detect it at all. Down
grading to package from Feisty (xserver-xorg-video-ati_6.6.3-2ubuntu6_i386.deb)
worked.  [But 6.6.3 is unavailable in Intrepid.]

I then upgraded to Hoary and the behaviour as changed slightly. Now the LVDS
displays a partial screen. The resolution is set to 1280x768, while the LVDS
only supports 1024x768. Any attempt to change this fails.

So I kept on playing with it a little more with the default xorg.conf file,
which produces the 1280x768 output on the LVDS.

Like I said the LVDS is still not being detected, but since X assumes a default
screen size of 1280x768 on the non-attached external display I did some more
experimentation and found that the following results in something useful on the
screen with direct rendering enabled:

  # build a modeline - the following works for me
  gtf 1024 768 78.654
  # then use the output from above (everything after the word modeline)
  # to set the resolution of the non-existent external monitor
  xrandr --newmode "1024x768_78.65" 87.02 1024 1088 1200 1376 768 769 772 804
-HSync +Vsync

  xrandr --addmode VGA-0 "1024x768_78.65"

  xrandr --output VGA-0 --mode "1024x768_78.65"

I think it's still problematic that the LVDS is not detected, since it keeps me
from running dual headed, but at least the laptop is semi-functional. [Here is]
the current xrandr output after the above tweaks:

 Screen 0: minimum 320 x 200, current 1024 x 768, maximum 1280 x 1200
 VGA-0 disconnected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm
x 0mm
   1024x768_78.65   78.7* 
 S-video disconnected (normal left inverted right x axis y axis)

In Intrepid Alpha 4, the xrandr output looks like this:

Screen 0: minimum 320 x 200, current 1152 x 864, maximum 1360 x 1200
VGA-0 disconnected 1152x864+0+0 (normal left inverted right x axis y axis) 0mm
x 0mm
S-video disconnected (normal left inverted right x axis y axis)
  1152x864 (0x4f)   81.6MHz
        h: width  1152 start 1216 end 1336 total 1520 skew    0 clock   53.7KHz
        v: height  864 start  865 end  868 total  895           clock   60.0Hz

Still no LVDS...


[lspci]
00:00.0 Host bridge: ATI Technologies Inc AGP Bridge [IGP 320M] (rev 13)
00:01.0 PCI bridge: ATI Technologies Inc PCI Bridge [IGP 320M] (rev 01)
00:02.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
00:06.0 Multimedia audio controller: ALi Corporation M5451 PCI AC-Link
Controller Audio Device (rev 02)
00:07.0 ISA bridge: ALi Corporation M1533/M1535 PCI to ISA Bridge [Aladdin
IV/V/V+]
00:08.0 Modem: ALi Corporation M5457 AC'97 Modem Controller
00:0a.0 CardBus bridge: O2 Micro, Inc. OZ601/6912/711E0 CardBus/SmartCardBus
Controller
00:10.0 IDE interface: ALi Corporation M5229 IDE (rev c4)
00:11.0 Bridge: ALi Corporation M7101 Power Management Controller [PMU]
00:12.0 Ethernet controller: National Semiconductor Corporation DP83815
(MacPhyter) Ethernet Controller
01:05.0 VGA compatible controller: ATI Technologies Inc Radeon IGP 320 M


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