Video Mode Issue - Ubuntu 11.04 and Sandy Bridge

Stephen stephen-d-bJEeYj9oJeDQT0dZR+AlfA at public.gmane.org
Mon May 9 18:06:11 UTC 2011


So I build a new machine for the new Ubuntu release.
The hardware is an
ASUS P8H67-M LE motherboard that uses Sandy Bridge for video.
The CPU is an Intel i5
My monitor is a Visionquest that has worked very well with other video 
and Ubuntu versions.

Now, I am getting video syncing problems. And when I do get everything 
going, it is like I have a virtual screen extending below the actual 
screen .... but without any scroll bars.

hwinfo --framebuffer gives:

 > hal.1: read hal dataprocess 2069: arguments to dbus_move_error() were 
incorrect, assertion "(dest) == NULL || !dbus_error_is_set ((dest))" 
failed in file dbus-errors.c line 280.
This is normally a bug in some application using the D-Bus library.
libhal.c 3483 : Error unsubscribing to signals, error=The name 
org.freedesktop.Hal was not provided by any .service files
02: None 00.0: 11001 VESA Framebuffer
   [Created at bios.464]
   Unique ID: rdCR.ealWiwZz1JF
   Hardware Class: framebuffer
   Model: "Intel(R)Sandybridge Desktop Graphics Controller"
   Vendor: "Intel Corporation"
   Device: "Intel(R)Sandybridge Desktop Graphics Controller"
   SubVendor: "Intel(R)Sandybridge Desktop Graphics Chipset Accelerated 
VGA BIOS"
   SubDevice:
   Revision: "Hardware Version 0.0"
   Memory Size: 63 MB + 960 kB
   Memory Range: 0xc0000000-0xc3feffff (rw)
   Mode 0x033c: 1920x1440 (+1920), 8 bits
   Mode 0x034d: 1920x1440 (+3840), 16 bits
   Mode 0x035c: 1920x1440 (+7680), 24 bits
   Mode 0x033a: 1600x1200 (+1600), 8 bits
   Mode 0x034b: 1600x1200 (+3200), 16 bits
   Mode 0x035a: 1600x1200 (+6400), 24 bits
   Mode 0x0307: 1280x1024 (+1280), 8 bits
   Mode 0x031a: 1280x1024 (+2560), 16 bits
   Mode 0x031b: 1280x1024 (+5120), 24 bits
   Mode 0x0305: 1024x768 (+1024), 8 bits
   Mode 0x0317: 1024x768 (+2048), 16 bits
   Mode 0x0318: 1024x768 (+4096), 24 bits
   Mode 0x0312: 640x480 (+2560), 24 bits
   Mode 0x0314: 800x600 (+1600), 16 bits
   Mode 0x0315: 800x600 (+3200), 24 bits
   Mode 0x0301: 640x480 (+640), 8 bits
   Mode 0x0303: 800x600 (+832), 8 bits
   Mode 0x0311: 640x480 (+1280), 16 bits
   Config Status: cfg=new, avail=yes, need=no, active=unknown

So the error is a bit troubling. But this is a recent release and the 
drivers having some bugs is no surprise.

xrandr

Screen 0: minimum 320 x 200, current 1920 x 1200, maximum 8192 x 8192
VGA1 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 
518mm x 324mm
    1920x1200      60.0*+
    1680x1050      60.0
    1280x1024      60.0
    1440x900       59.9
    1024x768       60.0
    800x600        60.3
    640x480        60.0
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)

So I may not even have a match of high video resolutions between the 
monitor and the chip set. But with the error in hwinfo, I am not sure 
that the data reported can be trusted.

I tried to find the specs on Sandy bridge video modes but there was so 
much noise in Google that I got no where.

The monitor's on screen menu reports a resolution of 1680x1050 when 
connected to the Sandy Bridge machine.

So anyone have any suggestions?

Perhaps a cheap video card in the interim?

Thanks
Stephen
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