Asus X58C - Video 771/671 - resolution problems on slackware linux 12.2.

lordbone · 08-27-2009, 03:57 AM

Hello every1,

I seem to be having trouble with an Asus X58C laptop, equiped with an on-board video card made by SiS. The problem is that SiS never made drivers for this video card. By default i have the 3 resolutions: "640x480", "800x600" and "1024x768". The laptop has a wide-screen and a "1024x800" resolution makes everything look funny.

I'm trying to get the "1280x800" resolution out of it, but I don't seem to get why it doesn't work.

/etc/X11/xorg.conf is default at the moment, only added the "1280x800" resolution, like this.

Code:

Section "Screen"
    Identifier  "Screen 1"
    Device      "* Generic VESA compatible"
    Monitor     "My Monitor"
    DefaultDepth 24

    Subsection "Display"
        Depth       8
        Modes       "1280x1024" "1280x800" "1024x768" "800x600" "640x480"
        ViewPort    0 0
    EndSubsection
    Subsection "Display"
        Depth       16
        Modes       "1280x1024" "1280x800" "1024x768" "800x600" "640x480"
        ViewPort    0 0
    EndSubsection
    Subsection "Display"
        Depth       24
        Modes       "1280x1024" "1280x800" "1024x768" "800x600" "640x480"
        ViewPort    0 0
    EndSubsection
EndSection

Other than that the xorg.conf is default.
An output of lspci -v is as follows:

Code:

 
01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 771/671 PCIE VGA Display Adapter (rev 10) (prog-if 00 [VGA controller])
        Subsystem: ASUSTeK Computer Inc. Unknown device 1812
        Flags: 66MHz, medium devsel, IRQ 10
        BIST result: 00
        Memory at c0000000 (32-bit, prefetchable) [size=256M]
        Memory at fd7e0000 (32-bit, non-prefetchable) [size=128K]
        I/O ports at cc00 [size=128]
        Capabilities: [40] Power Management version 2
        Capabilities: [50] AGP version 3.0

From what I read on google, VESA doesn't support wide-screen resolutions. Is there any way//patch to enable them on VESA.

As a final mention, I'm not trying to achieve openGL or hardware acceleration, this is an office laptop, all I need is the resolution fix.

Thanks for reading this.

Best regards.

business_kid · 08-28-2009, 03:43 AM

Try this from a terminal (runlevel 3)
startx > logfile 2>&1

Then read the logfile. It will tell you why every mode is thrown out as it throws them out.

In passing, you hardly need to set modes in 8 or 16 bit sections. Support for 8 bit colour was mainly for cards with 1 or 2 MB memory. You have 256Mb. You might also set 32bit colour.
It could just be low HorizSync or VertRefresh values.
BTW, my laptop does the 1200x800 but it's not a vesa mode, afaict, so the vesa driver will not. 1152x864(?) or something like is as near as you will get in vesa modes.

nitrousoxide82 · 08-31-2009, 06:32 PM

You are plagued by a SiS 671, just like me. See here for what other strugglers like me have gathered. It solved the problem for me.
As you already expected, you really won't get Compiz or accelerated OpenGL out of this chipset on Linux.