I'm not sure it's nvidia-glx-177 the problem. It's more than one month I'm experiencing this, and hell if it is annoying; I've got at least four users complaining! The system is barely usable.
They have all iMac PPC64 G5 machines, with an nvidia card. However, using a PPC machine, they can't use the binary nvidia drivers. Instead, the "nv" opensource driver is in use. NOTICE: when the screen fades to black due to gnome-screensaver, the CPU goes back to normal. Logging in with something else other than GNOME doesn't hog the CPU, too. Using gdb as per the https://wiki.ubuntu.com/X/Troubleshooting/HighCPU guide, I see almost always the SmartScheduleStartTimer () function at the top of the stack: (gdb) bt full #0 0x0f995874 in setitimer () from /lib/libc.so.6 No symbol table info available. #1 0x1010b3dc in SmartScheduleStartTimer () at ../../os/utils.c:1236 timer = {it_interval = {tv_sec = 0, tv_usec = 20000}, it_value = { tv_sec = 0, tv_usec = 20000}} #2 0x10103ba4 in WaitForSomething (pClientsReady=0x103d7b40) at ../../os/WaitFor.c:232 i = 0 waittime = {tv_sec = 270467104, tv_usec = 270427012} wt = (struct timeval *) 0x101ecaf4 timeout = <value optimized out> clientsReadable = {fds_bits = {0 <repeats 32 times>}} clientsWritable = {fds_bits = {18, 0, 18, 36, 0, 0, 272777608, -956192, 270608992, 257411340, 272813256, -956128, 256982472, 257617456, 2359314, -956160, 257556312, 270608992, 273026680, -956144, 0, 272460784, 32, 0, 32, 270422968, 32, -956112, 269543400, 36, 273138440, 273133608}} curclient = <value optimized out> selecterr = 0 nready = <value optimized out> devicesReadable = {fds_bits = {0 <repeats 32 times>}} now = <value optimized out> someReady = 0 #3 0x10048768 in Dispatch () at ../../dix/dispatch.c:367 result = 0 client = (ClientPtr) 0x1047b028 nready = -1 start_tick = 6420 #4 0x10028c88 in main (argc=10, argv=0xfff16d44, envp=0x10211110) at ../../dix/main.c:383 i = 1 alwaysCheckForInput = {0, 1} Strace says: Process 6828 attached - interrupt to quit ^CProcess 6828 detached % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 59.08 3.378467 6 549108 select 40.84 2.335165 2 1098214 setitimer 0.07 0.004228 11 368 184 read 0.01 0.000345 10 35 writev ------ ----------- ----------- --------- --------- ---------------- 100.00 5.718205 1647725 184 total ** Also affects: xserver-xorg-video-nv (Ubuntu) Importance: Undecided Status: New ** Also affects: gnome-session (Ubuntu) Importance: Undecided Status: New -- xorg eating 100% of CPU after upgrading to gnome 2.25.5 https://bugs.launchpad.net/bugs/319813 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
