Red Hat Bugzilla – Bug 471474
desktop effects on + switch to tty and back = crash of Xorg; gdb attaching -> total freeze of computer
Last modified: 2018-04-11 15:23:53 EDT
Created attachment 323500 [details]
Description of problem:
Summary basically provides whole story. Switched on desktop-effects and when triaging bug 471353 I tried to prove that switching between console and X just works, I got black screen on returning to X :-). Computer was not dead and mouse was moving, but aside from the mouse cursor the screen was totally black.
I was able to connect to the computer via ssh from other computer. When trying to gdb --pid=$(pidof Xorg) gdb was begun to start, printed "attaching to the process XXXXX (no debuginfo) ..." and then it froze completely.
Of course, I have no /etc/X11/xorg.conf
Version-Release number of selected component (if applicable):
Steps to Reproduce:
2.Alt+Ctrl+2, Alt+Ctrl+7, Alt+Ctrl+1
black screen with mouse cursor moving
lovely Xorg display with Firefox where I could continue explaining to the reporter that our Xorg Just Works™
Created attachment 323501 [details]
Just to emphasize. Xorg.0.log has this lovely crash:
0: /usr/bin/Xorg(xorg_backtrace+0x3b) [0x812b9ab]
1: /usr/bin/Xorg(mieqEnqueue+0x289) [0x810b0c9]
2: /usr/bin/Xorg(xf86PostMotionEventP+0xc2) [0x80d3fb2]
3: /usr/bin/Xorg(xf86PostMotionEvent+0x68) [0x80d4118]
4: /usr/lib/xorg/modules/input//synaptics_drv.so [0x2fe8fe]
5: /usr/lib/xorg/modules/input//synaptics_drv.so [0x300f79]
6: /usr/bin/Xorg [0x80bcb17]
7: /usr/bin/Xorg [0x80ac67e]
10: /lib/libc.so.6(ioctl+0x19) [0xc3e929]
11: /usr/lib/libdrm.so.2 [0x58806cf]
12: /usr/lib/libdrm.so.2(drmWaitVBlank+0x28) [0x5880e08]
13: /usr/lib/dri/i965_dri.so [0x3b056c]
14: /usr/lib/dri/i965_dri.so(driWaitForVBlank+0xd8) [0x3b078c]
15: /usr/lib/dri/i965_dri.so(intelSwapBuffers+0x262) [0x3b65a0]
16: /usr/lib/dri/i965_dri.so [0x3b0906]
17: /usr/lib/xorg/modules/extensions//libglx.so [0x212454]
18: /usr/lib/xorg/modules/extensions//libglx.so [0x204cfe]
19: /usr/lib/xorg/modules/extensions//libglx.so [0x20863a]
20: /usr/bin/Xorg(Dispatch+0x34f) [0x8085e6f]
21: /usr/bin/Xorg(main+0x47d) [0x806b6ed]
22: /lib/libc.so.6(__libc_start_main+0xe5) [0xb796d5]
23: /usr/bin/Xorg [0x806aad1]
Created attachment 323502 [details]
I would almost forget
This bug appears to have been reported against 'rawhide' during the Fedora 10 development cycle.
Changing version to '10'.
More information and reason for this action is here:
*** Bug 473489 has been marked as a duplicate of this bug. ***
I would add, that not only gdb lead to total freeze, chvt (iirc) did similar result. Or killing X, not sure...
This has evaporated somewhere.