Ryan Hope wrote: > I have tested this with 2.6.26-rc5-mm3 and with 2.6.26-rc8 w/ the > get_user_pages_fast patches from -rc5-mm3... Xorg 1.4.99.* will start > to load but hangs at a black screen. At this point, I can not switch > to another tty. When I try pressing ctrl+alt+del the kernel ooopses > and the caps lock led starts to blink. This happens using the nv, > radeon and radeonhd drivers (the nv was tested on another box > obviously). I have also tried to unselect HAVE_GET_USER_PAGES_FAST in > my kernel config but this does not help. I can not figure out where or > what the bug is. I can provide any other info you guys need to figure > this out. Let me know what I can do. I think that I've seen this too on 2.6.26-rc8 on my laptop. It's 64-bit AMD-64 single core (although I run a SMP-alternatives kernel on it) and I was using the nv driver. The symptoms are the same. Everything was working great until I started X. I SSH'd in and got the dmesg after X locked up. The full dmesg and config are attached because Thunderbird is a very stupid program and won't let me paste without wrapping. Here is a bit of what I got though. [ 269.224276] BUG: unable to handle kernel paging request at ffffe20003480000 [ 269.224291] IP: [] copy_page_range+0x520/0x760 [ 269.224306] PGD 1102067 PUD 1103067 PMD 0 [ 269.224315] Oops: 0000 [1] SMP [ 269.224473] Call Trace: [ 269.224495] [] dup_mm+0x26b/0x3c0 [ 269.224507] [] copy_process+0xc2c/0x1210 [ 269.224518] [] do_fork+0x73/0x310 [ 269.224526] [] sys_rt_sigaction+0x8e/0xd0 [ 269.224536] [] system_call_after_swapgs+0x7b/0x80 [ 269.224542] [] ptregscall_common+0x67/0xb0