I have tried using Ubuntu 5.10 live CD but it could not start X. However, the same problem happened with previous version of Ubuntu, which I installed, and couldn't start X with the same error message. Device: ATI Technologies, Inc. Radeon X800 XL (R430 UM) as reported in Xorg.0.log Some interesting messages: (--) PCI:*(1:0:0) ATI Technologies Inc unknown chipset (0x554d) rev 0, Mem @ 0xc0000000/28, 0xffa20000/16, I/O @ 0x9800/8, BIOS @ 0xffa00000/17 (--) PCI:*(1:0:1) ATI Technologies Inc unknown chipset (0x556d) rev 0, Mem @ 0xffa30000/16 Later, right before exit: (II) Primary Device is: PCI 01:00:0 (II) ATI: Candidate "Device" section "ATI Technologies, Inc. Radeon X800 XL (R430 UM) (II) ATI: PCI Mach64 in slot 1:0:0 could not be detected! (II) ATI: PCI Mach64 in slot 1:0:1 could not be detected! (EE) No devices detected. Fatal server error: no screens found I have noticed other bug reports with similar/same error marked as resolved. Please let me know if this is due to an "old" version, and whether it can be resolved by manually updating the driver. I have not included the Xorg.0.log because I had found it somewhat difficult to transfer the file from the live CD RAM disk. The information above is typed by hand and double checked.
I forgot to specify, the graphics card in question is a PCI Express one.
can you try xorg 6.9/7.0/cvs? The id for your card was added after 6.8 was released. as a workaround, you can force the chip id to another supported r4xx chip in your xorg.conf.
this card is supported in xorg 6.9/7.0/cvs: { PCI_CHIP_R430_554D, "ATI Radeon X800 XL (R430) (PCIE)" }, for 6.8.2, try forcing the chipid to an older x800 in the device section of your config: ChipID 0x4A4B
Thank you for your information. I have actually resolved this myself. The soultion was to simply download the fglrx driver and reconfigure the X server to use it. No other upgrade was required and forcing the ChipID was not necessary. Also, other Ubuntu users with similar problem might simply want to consult the following page for solution: https://wiki.ubuntu.com/BinaryDriverHowto/ATI I have tried both solutions (in the second solution I have used the repository, not the ATI driver) and both solutions work.
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