Okay, running and showing us lspci (both -n and -v) output would probably help... not that I'm an expert on this and likely to be able to help... Furthermore knowing _when_ it panics would also be a real boon. Cheers, MaZe. On Tue, 21 Mar 2006, Gilles CHAUVIN wrote: > On 3/20/06, Maciej ?enczykowski <maze@xxxxxxx> wrote: > I'm pretty sure that U3 will have the same kernel. As such it would > probably be best to fix this now, instead of waiting for U3 to come out. > Could you tell us when the kernel panic happens? Processor? i586? > i686? architecture? single? multiprocessor? ... etc ... any options with > which it works (like noacpi & others). > $ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Intel(R) Pentium(R) 4 CPU 2.80GHz stepping : 1 cpu MHz : 2799.397 cache size : 1024 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe pni monitor ds_cpl cid xtpr bogomips : 5521.40 $ sudo cat /boot/grub/menu.lst Password: # grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot partition. This means that # all kernel and initrd paths are relative to /boot/, eg. # root (hd0,0) # kernel /vmlinuz-version ro root=/dev/VG00/root # initrd /initrd-version.img #boot=/dev/sda1 default=1 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.9-34.EL) root (hd0,0) kernel /vmlinuz-2.6.9-34.EL ro root=/dev/VG00/root initrd /initrd-2.6.9-34.EL.img title CentOS (2.6.9-22.0.2.EL) root (hd0,0) kernel /vmlinuz-2.6.9-22.0.2.EL ro root=/dev/VG00/root initrd /initrd-2.6.9-22.0.2.EL.img For now, I'm running the -22.0.2 kernel since this is the last kernel known to work on that hardware. I upgraded 5 PCs. 3 of them have the exact same hardware and the exact same failure (kernel panic). One of those server isn't in production yet so it would be possible to do some testing. The above informations were gathered from a remote SSH session. I cannot give more details for now and I won't be able to tell more about that problem until next wednesday. Gilles.