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Description of problem: The vnc.so module causes a crash (glx-related?) when starting a GNOME session. Version-Release number of selected component (if applicable): tigervnc-1.2.80-0.20.20130314svn5065.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1.Install tigervnc-server, tigervnc-server-module, and xorg-x11-xdm (for easier testing) 2.systemctl disable gdm.service; systemctl enable xdm.service 2.As root, run "vncpasswd" and set a password. 3.Edit /etc/X11/xorg.conf.d/10-libvnc.conf and uncomment all the config lines (might need to change DefaultDepth to 24) 4.Restart 5.Log in. Actual results: Session does not start. Back to the xdm prompt. Expected results: Session starts. Additional info: If you try with gdm, the X server crashes repeatedly and this makes debugging tricky.
Xorg: ../include/privates.h:122: dixGetPrivateAddr: Assertion `key->initialized' failed. Program received signal SIGABRT, Aborted. [...] (gdb) bt #0 0x0000003e3f035979 in raise () from /lib64/libc.so.6 #1 0x0000003e3f037088 in abort () from /lib64/libc.so.6 #2 0x0000003e3f02e8e6 in __assert_fail_base () from /lib64/libc.so.6 #3 0x0000003e3f02e992 in __assert_fail () from /lib64/libc.so.6 #4 0x00007f0ac6db41c0 in dixGetPrivateAddr (key=<optimized out>, key=<optimized out>, privates=<optimized out>) at ../include/privates.h:122 #5 0x00007f0ac6dcb23f in dixGetPrivateAddr (key=<optimized out>, key=<optimized out>, privates=<optimized out>) at glxscreens.c:194 #6 dixLookupPrivate (key=0x7f0ac6fe79a0 <glxScreenPrivateKeyRec>, privates=<optimized out>) at ../include/privates.h:165 #7 glxGetScreen (pScreen=<optimized out>) at glxscreens.c:193 #8 0x00007f0ac6dc5088 in validGlxScreen (screen=<optimized out>, pGlxScreen=pGlxScreen@entry=0x7fffc8057508, err=<optimized out>, client=0x19c57e0) at glxcmds.c:63 #9 0x00007f0ac6dc7f4a in validGlxScreen (err=<synthetic pointer>, pGlxScreen=0x7fffc8057508, screen=<optimized out>, client=0x19c57e0) at glxcmds.c:2406 #10 __glXDisp_QueryServerString (cl=<optimized out>, pc=0x19b8a30 "\232\023\003") at glxcmds.c:2405 #11 0x00007f0ac6dc9b70 in __glXDispatch (client=<optimized out>) at glxext.c:601 #12 0x00000000004372ef in Dispatch () at dispatch.c:434 #13 0x000000000043b10a in dix_main (argc=1, argv=0x7fffc8057788, envp=<optimized out>) at main.c:294 #14 0x0000003e3f021af5 in __libc_start_main () from /lib64/libc.so.6 #15 0x0000000000426651 in _start ()
Doesn't happen with tigervnc-1.3.0 (fedora/master) rebuilt for rhel-7.0.
Created attachment 834407 [details] tigervnc12-xorg113-glx.patch (replacement) Here is the fix, found by comparing differences between our 1.2.80 and 1.3.0 packages.
Verified with tigervnc-1.2.80-0.22.20130314svn5065.el7 With old version, I get crash cycle (I tested without xdm since it's not available in RHEL7). After installing the new build, GDM starts and I can log in normally.
This request was resolved in Red Hat Enterprise Linux 7.0. Contact your manager or support representative in case you have further questions about the request.