> -----Original Message----- > From: centos-bounces at centos.org > [mailto:centos-bounces at centos.org] On Behalf Of R P Herrold > Sent: Monday, March 13, 2006 11:23 AM > To: CentOS mailing list > Subject: [CentOS] 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!!!!