Hi all, (My first time in seeking assistance via the CentOS mailing list ... Not sure if I should be submitting this as a possible kernel bug). I've successfully installed Cent OS 5.1 (kernel: 2.6.18-53.1.13.el5) on an Optiplex 755 (EM64T). However I'm not able to get a NVIDIA Gigabyte 8600GT (PCI-e) card to work with the system despite successfully installing the latest NVIDIA drivers (NVIDIA-Linux-x86_64-169.07-pkg2.run). I've tested the same configuration in Windows with no difficulties. I suspect the kernel is not able to allocate the appropriate hardware resources possibly resulting in the card failing to fire up properly: Some diagnostics: A snippet of the Xorg log file: # more /var/log/Xorg.0.log | grep -E 'WW|EE' (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (WW) ****INVALID MEM ALLOCATION**** b: 0x13a000000 e: 0x13affffff correcting (EE) Cannot find a replacement memory range (WW) ****INVALID MEM ALLOCATION**** b: 0x138000000 e: 0x139ffffff correcting (WW) ****INVALID IO ALLOCATION**** b: 0x13800dc80 e: 0x13800dcff correcting (EE) end of block range 0xffffffff < begin 0x138000000 (EE) Cannot find a replacement memory range (EE) NVIDIA(0): The NVIDIA GPU at PCI:1:0:0 is not supported by the 169.09 (EE) NVIDIA(0): NVIDIA driver. (EE) NVIDIA(0): Failed to initialize the NVIDIA graphics device! (EE) Screen(s) found, but none have a usable configuration. # dmesg | grep Cannot PCI: Cannot allocate resource region 8 of bridge 0000:00:01.0 PCI: Cannot allocate resource region 8 of bridge 0000:00:1c.0 PCI: Cannot allocate resource region 1 of device 0000:00:03.3 PCI: Cannot allocate resource region 0 of device 0000:00:19.0 PCI: Cannot allocate resource region 1 of device 0000:00:19.0 PCI: Cannot allocate resource region 0 of device 0000:00:1a.7 PCI: Cannot allocate resource region 0 of device 0000:00:1b.0 PCI: Cannot allocate resource region 0 of device 0000:00:1f.3 PCI: Cannot allocate resource region 0 of device 0000:01:00.0 PCI: Cannot allocate resource region 3 of device 0000:01:00.0 # lsmod | grep nvidia nvidia 8885796 0 i2c_core 56129 3 i2c_ec,nvidia,i2c_i801 # lspci -v | grep -E '00:01.0|00:1c.0|00:03.3|00:19.0|00:1a.7|00:1b.0|00:1f.3|01:00.0' 00:01.0 PCI bridge: Intel Corporation 82Q35 Express PCI Express Root Port (rev 02) (prog-if 00 [Normal decode]) 00:03.3 Serial controller: Intel Corporation 82Q35 Express Serial KT Controller (rev 02) (prog-if 02 [16550]) 00:19.0 Ethernet controller: Intel Corporation 82566DM-2 Gigabit Network Connection (rev 02) 00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 02) (prog-if 20 [EHCI]) 00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 02) (prog-if 00 [Normal decode]) 00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 02) 01:00.0 VGA compatible controller: nVidia Corporation GeForce 8600 GT (rev a1) (prog-if 00 [VGA]) Is it likely that I need to try an older kernel or attempt to patch the current one ? Any suggestions are appreciated, John _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos