On Mon, Mar 22, 2004 at 09:54:33PM -0800, Bjorn Solberg wrote: >I'm running RedHat 9 on a Dell Dimension 2400 with an Intel 845G chipset. >I installed XFree 4.4.0 which took care of getting the refresh rate up to >85Hz. However, the log file says upon startup: > >[...] >(--) PCI:*(0:2:0) Intel Corp. 82845G/GL [Brookdale-G] Chipset Integrated Graphics Device rev 1, Mem @ 0xf0000000/27, 0xfeb80000/19 >[...] >(II) Primary Device is: PCI 00:02:0 >(--) Assigning device section with no busID to primary device >(--) Chipset 845G found >[...] >(II) I810(0): VESA VBE OEM Product: Intel(r)845G/845GL/845GE/845GV Graphics Controller >(II) I810(0): VESA VBE OEM Product Rev: Hardware Version 0.0 >(II) I810(0): Integrated Graphics Chipset: Intel(R) 845G >(--) I810(0): Chipset: "845G" >[...] >(==) I810(0): Silken mouse enabled >(II) I810(0): Initializing HW Cursor >(**) Option "dpms" >(**) I810(0): DPMS enabled >(WW) I810(0): Disabling XVideo output because the mode pixel rate (164 MHz) > exceeds the hardware limit (120 MHz) >(II) I810(0): X context handle = 0x00000001 >[...] > >Reducing the resolution to 1280x1024 made XVideo work. I tried setting >the DacSpeed parameter in XF86Config but that didn't work. I thought the >845G would be capable of that, as I have an old Matrox G400 that can do >XVideo at that resolution with no problem. So this leads to a couple of >questions: > >1) Is this a limit in the driver, or can the 845G really not handle > XVideo at 1600x1200? (Windows XP seems to handle it just fine, > though.) If not a physical limit, how can I make the driver handle > it, unless a driver update is needed? The limit is based on the documentation I had available when writing the driver, and on the fact that exceeding those documented overlay limits would result in a hardware lockup. It is possible that newer hardware revisions have a different physical limit. You'd need to rebuild the driver with the limit check removed/changed and see if it locks up or not when bring up an XVideo window. >2) If 1600x1200 really is too much for the 845G, is there any way that > XVideo be re-enabled (without restarting the X server) after > dynamically changing the resolution (Ctr-Alt-+/-)? The check is done at each mode switch, and XVideo is re-enabled if you select a lower-bandwidth mode. 1600x1200@60Hz is within the 845G limits, BTW, so if you want to keep that resolution you could do so if you do it at 60Hz. David _______________________________________________ XFree86 mailing list XFree86@xxxxxxxxxxx http://XFree86.Org/mailman/listinfo/xfree86
