I have tried that on my debian jessie machine. Thunderbird indeed crashed the session. The backtrace is this:
Program received signal SIGSEGV, Segmentation fault. _XData32 (dpy=dpy@entry=0x19b8680, data=<optimized out>, data@entry=0x20b26e4, len=93460, len@entry=109812) at XlibInt.c:3792 3792 XlibInt.c: Datei oder Verzeichnis nicht gefunden. (gdb) bt full #0 _XData32 (dpy=dpy@entry=0x19b8680, data=<optimized out>, data@entry=0x20b26e4, len=93460, len@entry=109812) at XlibInt.c:3792 buf = <optimized out> i = <optimized out> #1 0x00007ff7d90c6ce1 in XChangeProperty (dpy=0x19b8680, w=<optimized out>, property=<optimized out>, type=6, format=<optimized out>, mode=<optimized out>, data=0x20b26e4 "", nelements=27453) at ChProp.c:85 req = 0x19c6548 len = 109812 #2 0x00000000004b20b7 in nxagentExportProperty (pWin=0x20, property=27453, type=34285284, format=0, mode=0, nUnits=27453, value=0x2072700) at Rootless.c:763 n = 27453 propertyX = 4 typeX = 34285284 propHints = {flags = 0, input = 32, initialState = 33142432, iconPixmap = 4333663, iconWindow = 6, iconX = 140702462200332, iconY = 18014767901107996, iconMask = 4927218, windowGroup = 0} export = 4088 freeMem = 33142432 #3 0x000000000042238a in ProcChangeProperty (client=0xff7) at X/NXproperty.c:331 pWin = 0x1f9b6a0 len = 92982 totalSize = 4088 err = 4088 stuff = 0x1fbcd24 #4 0x000000000042f002 in Dispatch () at X/NXdispatch.c:748 clientReady = 0x7ffe2b5ee710 result = <optimized out> client = 0x1edf360 nready = 0 icheck = 0xbb9d00 <checkForInput> start_tick = 20 currentDispatch = <optimized out> #5 0x000000000040da0f in main (argc=15, argv=0x7ffe2b5eecc8, envp=<optimized out>) at main.c:450 i = <optimized out> j = 2 k = 2 error = 32766 xauthfile = <optimized out> alwaysCheckForInput = {0, 1}
Which needs further investigation.
Uli
On Mon, May 8, 2017 at 7:32 PM, Ulrich Sibiller <uli42@gmx.de> wrote:
On Mon, May 8, 2017 at 7:28 PM, Stefan Baur <X2Go-ML-1@baur-itcs.de> wrote:
Am 08.05.2017 um 07:44 schrieb Ulrich Sibiller:
Yes, but to get better output please install all other dbg packages from here, too:
http://packages.x2go.org/debian/pool/main/n/nx-libs/
There a doc regarding automaitc debug package installation here: https://wiki.debian.org/HowToGetABacktrace#Installing_the_debugging_symbols
Program received signal SIGSEGV, Segmentation fault. _XData32 (dpy=dpy@entry=0x2539060, data=<optimized out>, data@entry=0x7f66477bcff4, len=101652, len@entry=109812) at XlibInt.c:3792 3792 in XlibInt.c At this stage you should run bt (backtrace) so we can see the calls leading to this. There's no need to do single steps.
To see better output including the line where it crashed you could also recompile the package as described in https://wiki.debian.org/HowToGetABacktrace#Rebuilding_the_package_you.2BIBk-...
Sorry, but this is way over my head and out of my comfort zone. Would it help if I granted you access to a freshly installed test system?
Really? The doc describes every step...
Yes, I can have a look. ;-)
Uli
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