Video Mode Issue - Ubuntu 11.04 and Sandy Bridge

[Lennart Sorensen]

On Mon, May 09, 2011 at 02:06:11PM -0400, Stephen wrote:
> 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.

The VESA bios for intel's new video cores seems buggy at the moment
(I have spent plenty of time lately dealing with the buggy Phoenix VESA
bios it uses).

This makes the vesa driver not work properly.  Of course since there is
no native driver for linux yet (I saw a claim one should be out by
september), you have a problem.

> 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?

Yeah that would help a lot.

-- 
Len Sorensen
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