> -----Original Message-----
> From: centos-bounces@xxxxxxxxxx
> [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of R P Herrold
> Sent: Monday, March 13, 2006 11:23 AM
> To: CentOS mailing list
> Subject: Re: centos] Video driver for IBM Netvista
> w/Intel 845chipset
>
> On Sun, 12 Mar 2006, Thomas E Dukes wrote:
>
> > I am having problems with video in X. I get an over
> frequency issue
> > using the stock CentOS 4.2 driver. I have searched IBM and
> Intel for
> > the driver but no luck.
> > Occassionally I see something about need to load a kernel
> module for
> > agpgart. How do I do this? Anyone have a similar setup or
> know where
> > I can find the driver?
>
> The issue is really the Intel onboard video hardware [which
> IBM Netvista have with the 845 chipset, and older HP units
> have at the 810 and 815 chipsets; newer Dell kit have 9xx
> series onboard video], which is at best moderately well supported
>
> The bugs which Mike Harris upstream has had on Intel kit, and
> his discussions on the devel mailing lists, show much that
> Intel could do better. ;) It turns out the Intel video
> hardware bios cannot be persistently have mode settings
> reprogrammed - one has to do it on the fly at boot time
> before X starts running.
>
> The doco on the xorg.conf file could be better, but one can
> plow through it and find some help with our friend Google.
>
> I had to use a program called '915resolution' from
> http://www.geocities.com/stomljen/ to remap video bios in
> ram, to support my (Westinghouse) panel monitor at 1440 x
> 1050 ($420 on sale at Best Buy last week - highly recommended).
> These is a similar tool for the Intex 8xx onboard video hardware.
>
> I added an item to the R/L 5 initscripts, to run this in
> /etc/rc.d/rc5.d/ as S89videotweak, [right before the xfs starts up]:
>
> #!/bin/sh
> # set up the Intel 865 chip for our Westinghouse monitor
> /etc/rc.d/915resolution 4d 1440 1050 16
> /etc/rc.d/915resolution 41 1152 864 16
> /etc/rc.d/915resolution 43 1280 960 16
> #
>
> and my /etc/X11/x.org looks like this in relevant part:
>
> Section "Monitor"
> Identifier "Monitor0"
> VendorName "Monitor Vendor"
> ModelName "LTV-19w3"
> DisplaySize 410 260
> HorizSync 30.0 - 82.0
> VertRefresh 56.0 - 76.0
> Option "dpms"
> # 1440x1050 @ 68.00 Hz (GTF) hsync: 74.26 kHz; pclk: 144.95 MHz
> Modeline "4d" 144.95 1440 1536 1696 1952 1050
> 1051 1054 1092 -HSync +Vsync
> Modeline "41" 99.64 1152 1224 1344 1536 864 865
> 868 901 -HSync +Vsync
> Modeline "43" 124.54 1280 1368 1504 1728 960 961
> 964 1001 -HSync +Vsync EndSection
>
> Section "Device"
> Identifier "Videocard0"
> Driver "i810"
> VendorName "Videocard vendor"
> BoardName "Intel 865"
> EndSection
>
> Section "Screen"
> Identifier "Screen0"
> Device "Videocard0"
> Monitor "Monitor0"
> DefaultDepth 16
> SubSection "Display"
> Viewport 0 0
> Depth 16
> # Modes "1280x960" "1152x864" "1024x768"
> "800x600" "640x480"
> # the default modes are there implicitly - enumerate
> the additional ones
> # Modes "5c" "50" "52" (these are 32 bit colors)
> # Modes "4d" "41" "43" (these are 16 bit colors)
> Modes "4d"
> # we drop scan rate for this last to accomodate the monitor
> # $ gtf 1440 1050 66
> # 1440x1050 @ 66.00 Hz (GTF) hsync: 72.01 kHz; pclk: 139.40
> MHz # Modeline "5c" 139.40 1440 1536 1688 1936 1050 1051
> 1054 1091 -HSync +Vsync
> EndSubSection
> EndSection
>
> ==========================
>
> Note that redefined mode 4d buried down in there in the
> 'Screen section -- I had to dink with 'gtf' and updating the
> Intel chip on the fly with these parameters to get it working
> well; I avoid the redefined modes 41 and 43, as they don't
> get that last pixel from the display, but they seem to work. the
> 32 bit colordepth is beyind the capabilities of the monitor -
> but 16 bit is sufficicent for my needs.
>
> -- Russ Herrold
Hello Russ!
About 99% of this is way over my head. :-(
I agree, Intel should do better for the Linux community. The only updated
driver I found was for the 915 chipset.
I ended up allocating more memory in the bios and got much better results.
I don't use X that much as this is my server. At least now its useable when
needed.
Thanks!!!!
