<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Error when recovering from suspend mode: fifo: ce0 engine fault on channel 0" href="https://bugs.freedesktop.org/show_bug.cgi?id=95520#c2">Comment # 2</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Error when recovering from suspend mode: fifo: ce0 engine fault on channel 0" href="https://bugs.freedesktop.org/show_bug.cgi?id=95520">bug 95520</a> from <a class="email" href="mailto:rcoe@wi.rr.com" title="rcoe@wi.rr.com">rcoe@wi.rr.com</a> <pre>Created <a href="attachment.cgi?id=127330" name="attach_127330" title="ps -el output">attachment 127330</a> <a href="attachment.cgi?id=127330&action=edit" title="ps -el output">[details]</a> ps -el output Linux kernel 4.7.5 desktop kde plasma 5 xorg-x11-server 7.6 libdrm_nouveau2 2.4.70 xf86-video-nouveau 1.0.13 System was coming out of suspend, and I typed in my password to the unlock screen. The mouse would move but the system locked up. I couldn't switch to another virtual terminal. I remote logged in but I couldn't exit several processes including Xorg. Many processes were waiting on 'SyS_po' or 'SyS_ep'. I don't know if the nouveau fifo read fault error is valid as it does often. 2016-10-16T07:00:35.743887-05:00 mothra kernel: [470577.068256] nouveau 0000:01:00.0: DRM: suspending console... 2016-10-16T07:00:35.743889-05:00 mothra kernel: [470577.068260] nouveau 0000:01:00.0: DRM: suspending display... 2016-10-16T07:00:35.743890-05:00 mothra kernel: [470577.068357] nouveau 0000:01:00.0: DRM: evicting buffers... 2016-10-16T07:00:35.743893-05:00 mothra kernel: [470577.458254] nouveau 0000:01:00.0: DRM: waiting for kernel channels to go idle... 2016-10-16T07:00:35.743895-05:00 mothra kernel: [470577.458284] nouveau 0000:01:00.0: DRM: suspending client object trees... 2016-10-16T07:00:35.743896-05:00 mothra kernel: [470577.458794] nouveau 0000:01:00.0: DRM: suspending kernel object tree... 2016-10-16T07:00:35.743967-05:00 mothra kernel: [470581.707062] nouveau 0000:01:00.0: DRM: resuming kernel object tree... 2016-10-16T07:00:35.743972-05:00 mothra kernel: [470581.998697] nouveau 0000:01:00.0: DRM: resuming client object trees... 2016-10-16T07:00:35.743974-05:00 mothra kernel: [470581.999113] nouveau 0000:01:00.0: DRM: resuming display... 2016-10-16T07:00:35.743992-05:00 mothra kernel: [470582.315418] nouveau 0000:01:00.0: DRM: resuming console... 2016-10-16T07:00:35.856377-05:00 mothra kernel: [470583.307500] nouveau 0000:01:00.0: fifo: read fault at 0001234000 engine 15 [PCE0] client 01 [PCOPY0] reason 02 [PAGE_NOT_PRESENT] on channel 0 [003fe12000 DRM] 2016-10-16T07:00:35.856387-05:00 mothra kernel: [470583.307504] nouveau 0000:01:00.0: fifo: ce0 engine fault on channel 0, recovering... (EE) [mi] EQ overflowing. Additional events will be discarded until existing events are processed. (EE) (EE) Backtrace: (EE) 0: /usr/bin/Xorg (xorg_backtrace+0x4a) [0x59c85a] (EE) 1: /usr/bin/Xorg (mieqEnqueue+0x253) [0x57e1e3] (EE) 2: /usr/bin/Xorg (QueuePointerEvents+0x52) [0x4533d2] (EE) 3: /usr/bin/Xorg (xf86PostMotionEvent+0xb9) [0x48c079] (EE) 4: /usr/lib64/xorg/modules/input/synaptics_drv.so (0x7fbd0fd0a000+0x53c4) [0x7fbd0fd0f3c4] (EE) 5: /usr/lib64/xorg/modules/input/synaptics_drv.so (0x7fbd0fd0a000+0x78b2) [0x7fbd0fd118b2] (EE) 6: /usr/bin/Xorg (0x400000+0x7c708) [0x47c708] (EE) 7: /usr/bin/Xorg (0x400000+0xa1d42) [0x4a1d42] (EE) 8: /lib64/libc.so.6 (0x7fbd1dec6000+0x34650) [0x7fbd1defa650] (EE) 9: /lib64/libc.so.6 (ioctl+0x5) [0x7fbd1dfa76e5] (EE) 10: /usr/lib64/libdrm.so.2 (drmIoctl+0x28) [0x7fbd1f2e9bf8] (EE) 11: /usr/lib64/libdrm.so.2 (drmCommandWrite+0x1b) [0x7fbd1f2ec90b] (EE) 12: /usr/lib64/libdrm_nouveau.so.2 (nouveau_bo_wait+0xc2) [0x7fbd198825b2] (EE) 13: /usr/lib64/xorg/modules/drivers/nouveau_drv.so (0x7fbd19a88000+0x865a) [0x7fbd19a9065a] (EE) 14: /usr/lib64/xorg/modules/libexa.so (0x7fbd19667000+0x5b9f) [0x7fbd1966cb9f] (EE) 15: /usr/lib64/xorg/modules/libexa.so (0x7fbd19667000+0x8280) [0x7fbd1966f280] (EE) 16: /usr/lib64/xorg/modules/libexa.so (0x7fbd19667000+0x1057d) [0x7fbd1967757d] (EE) 17: /usr/lib64/xorg/modules/libexa.so (0x7fbd19667000+0x8ae4) [0x7fbd1966fae4] (EE) 18: /usr/bin/Xorg (0x400000+0x124f13) [0x524f13] (EE) 19: /usr/bin/Xorg (0x400000+0xd90b0) [0x4d90b0] (EE) 20: /usr/bin/Xorg (0x400000+0xda905) [0x4da905] (EE) 21: /usr/bin/Xorg (0x400000+0x3a7af) [0x43a7af] (EE) 22: /usr/bin/Xorg (0x400000+0x3e7b3) [0x43e7b3] (EE) 23: /lib64/libc.so.6 (__libc_start_main+0xf1) [0x7fbd1dee6291] (EE) 24: /usr/bin/Xorg (_start+0x29) [0x428759] (EE) (EE) [mi] These backtraces from mieqEnqueue may point to a culprit higher up the stack. (EE) [mi] mieq is *NOT* the cause. It is a victim. (EE) [mi] EQ overflow continuing. 100 events have been dropped. (EE) (EE) Backtrace: (EE) 0: /usr/bin/Xorg (xorg_backtrace+0x4a) [0x59c85a] (EE) 1: /usr/bin/Xorg (QueuePointerEvents+0x52) [0x4533d2] (EE) 2: /usr/bin/Xorg (xf86PostMotionEvent+0xb9) [0x48c079] (EE) 3: /usr/lib64/xorg/modules/input/synaptics_drv.so (0x7fbd0fd0a000+0x53c4) [0x7fbd0fd0f3c4] (EE) 4: /usr/lib64/xorg/modules/input/synaptics_drv.so (0x7fbd0fd0a000+0x78b2) [0x7fbd0fd118b2] (EE) 5: /usr/bin/Xorg (0x400000+0x7c708) [0x47c708] (EE) 6: /usr/bin/Xorg (0x400000+0xa1d42) [0x4a1d42] (EE) 7: /lib64/libc.so.6 (0x7fbd1dec6000+0x34650) [0x7fbd1defa650] (EE) 8: /lib64/libc.so.6 (ioctl+0x5) [0x7fbd1dfa76e5] (EE) 9: /usr/lib64/libdrm.so.2 (drmIoctl+0x28) [0x7fbd1f2e9bf8] (EE) 10: /usr/lib64/libdrm.so.2 (drmCommandWrite+0x1b) [0x7fbd1f2ec90b] (EE) 11: /usr/lib64/libdrm_nouveau.so.2 (nouveau_bo_wait+0xc2) [0x7fbd198825b2] (EE) 12: /usr/lib64/xorg/modules/drivers/nouveau_drv.so (0x7fbd19a88000+0x865a) [0x7fbd19a9065a] (EE) 13: /usr/lib64/xorg/modules/libexa.so (0x7fbd19667000+0x5b9f) [0x7fbd1966cb9f] (EE) 14: /usr/lib64/xorg/modules/libexa.so (0x7fbd19667000+0x8280) [0x7fbd1966f280] (EE) 15: /usr/lib64/xorg/modules/libexa.so (0x7fbd19667000+0x1057d) [0x7fbd1967757d] (EE) 16: /usr/lib64/xorg/modules/libexa.so (0x7fbd19667000+0x8ae4) [0x7fbd1966fae4] (EE) 17: /usr/bin/Xorg (0x400000+0x124f13) [0x524f13] (EE) 18: /usr/bin/Xorg (0x400000+0xd90b0) [0x4d90b0] (EE) 19: /usr/bin/Xorg (0x400000+0xda905) [0x4da905] (EE) 20: /usr/bin/Xorg (0x400000+0x3a7af) [0x43a7af] (EE) 21: /usr/bin/Xorg (0x400000+0x3e7b3) [0x43e7b3] (EE) 22: /lib64/libc.so.6 (__libc_start_main+0xf1) [0x7fbd1dee6291] (EE) 23: /usr/bin/Xorg (_start+0x29) [0x428759] (EE)</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>