On Wed, Nov 16, 2011 at 1:40 PM, Michael Spreng <linuxwa...@m.spreng.ch> wrote: > Hello > > I already wrote on the discuss mailing list, to get my tablet working > again. Now I got a bit further, The device sows up as /dev/ttyS0, but it > crashes the X server: > > Backtrace: > 0: X (xorg_backtrace+0x28) [0x45fcb8] > 1: X (0x400000+0x64299) [0x464299] > 2: /lib64/libpthread.so.0 (0x7fa106c1f000+0xf430) [0x7fa106c2e430] > 3: /lib64/libc.so.6 (fclose+0x7) [0x7fa105bd83c7] > 4: /usr/lib64/xorg/modules/input/wacom_drv.so (0x7fa1025b6000+0xca00) > [0x7fa1025c2a00] > 5: /usr/lib64/xorg/modules/input/wacom_drv.so (0x7fa1025b6000+0xcadf) > [0x7fa1025c2adf] > 6: /usr/lib64/xorg/modules/input/wacom_drv.so (0x7fa1025b6000+0x12e31) > [0x7fa1025c8e31] > 7: /usr/lib64/xorg/modules/input/wacom_drv.so (0x7fa1025b6000+0xa1e5) > [0x7fa1025c01e5] > 8: X (0x400000+0x7ee31) [0x47ee31] > 9: X (0x400000+0x11d2df) [0x51d2df] > 10: X (0x400000+0x11d9ae) [0x51d9ae] > 11: X (config_init+0x9) [0x51cc99] > 12: X (InitInput+0x105) [0x471ff5] > 13: X (0x400000+0x24ab5) [0x424ab5] > 14: /lib64/libc.so.6 (__libc_start_main+0xfd) [0x7fa105b93d2d] > 15: X (0x400000+0x24699) [0x424699] > Segmentation fault at address (nil) > > Fatal server error: > Caught signal 11 (Segmentation fault). Server aborting > > I couldn't debug the server, it crashes very quickly, so no time to > attach a debugger. And starting xinit from gdb doesn't help either, as > it doesn't stop at the segmentation fault. How can I debug it, to help > find the bug? > > Michael > > P.S. : I'm using xorg 1.10.4 and kernel 3.0.6 > >
If you're comfortable debugging the driver with GDB, my suggestion would be to call sleep(10) when the driver starts to initialize the tablet. Add it to the top of the wcmPreInit function in wcmConfig.c. This should give you ample time to attach GDB before the driver starts to do anything. Jason --- Day xee-nee-svsh duu-'ushtlh-ts'it; nuu-wee-ya' duu-xan' 'vm-nvshtlh-ts'it. Huu-chan xuu naa~-gha. ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d _______________________________________________ Linuxwacom-devel mailing list Linuxwacom-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxwacom-devel
