Comment 62 for bug 968845

Hi,
I have a Macbook 7,1 with a similar trackpad to the above mentioned Macbook Air.

My trackpad uses the bcm5974 module, and in the original release of Ubuntu 12.04, my trackpad stopped working after suspending my computer.

I've recently been looking at the Xorg.conf file and noticed that after waking up my computer, Xorg.conf is full of error messages, so much so that after running my computer for 7 hours I have a 48 MB Xorg log file. I would be greatful if someone could tell me what these logs mean, since they seem to be due to the same bug.

In particular:

[ 16185.772] [dix] bcm5974: unable to find touch point 0
[ 16186.895] [dix] bcm5974: unable to find touch point 0
[ 16211.099] BUG: triggered 'if (!(event->device_event.flags & (1 << 5)))'
BUG: ../../dix/touch.c:642 in TouchConvertToPointerEvent()
[ 16211.100] Non-emulating touch event
[ 16211.100]
Backtrace:
[ 16211.116] 0: /usr/bin/X (xorg_backtrace+0x26) [0x7f349cc25866]
[ 16211.116] 1: /usr/bin/X (0x7f349ca9d000+0x76671) [0x7f349cb13671]
[ 16211.116] 2: /usr/bin/X (0x7f349ca9d000+0x11c29b) [0x7f349cbb929b]
[ 16211.116] 3: /usr/bin/X (0x7f349ca9d000+0x11bc35) [0x7f349cbb8c35]
[ 16211.116] 4: /usr/bin/X (0x7f349ca9d000+0x11efb3) [0x7f349cbbbfb3]
[ 16211.116] 5: /usr/bin/X (0x7f349ca9d000+0x14256a) [0x7f349cbdf56a]
[ 16211.116] 6: /usr/bin/X (mieqProcessDeviceEvent+0x204) [0x7f349cc063b4]
[ 16211.116] 7: /usr/bin/X (mieqProcessInputEvents+0x84) [0x7f349cc06444]
[ 16211.116] 8: /usr/bin/X (ProcessInputEvents+0x9) [0x7f349cb27e89]
[ 16211.116] 9: /usr/bin/X (0x7f349ca9d000+0x4e4e3) [0x7f349caeb4e3]
[ 16211.116] 10: /usr/bin/X (0x7f349ca9d000+0x3d6aa) [0x7f349cada6aa]
[ 16211.116] 11: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xed) [0x7f349ac5876d]
[ 16211.116] 12: /usr/bin/X (0x7f349ca9d000+0x3d99d) [0x7f349cada99d]
[ 16211.116] BUG: triggered 'if (!(event->device_event.flags & (1 << 5)))'
BUG: ../../dix/touch.c:642 in TouchConvertToPointerEvent()
[ 16211.116] Non-emulating touch event