[Xen-devel] qxl driver problem on linux xen's domUs

[Fabio Fantoni <fabio.fantoni@xxxxxxx>]

On my latest test qxl works good also in xen with windows 7 domUs.
On linux domUs (Fedora, Debian and Ubuntu) I always got black screen 
from xorg loading (with qxl driver installed), so I have never been able 
to see sufficent debug data.
Today I have tried again with Fedora 19 and I have finally got a 
backtrace in xorg's log:
> (EE) [mi] EQ overflowing.  Additional events will be discarded until 
> existing events are processed.
> (EE)
> (EE) Backtrace:
> (EE) 0: /usr/bin/X (mieqEnqueue+0x22b) [0x57728b]
> (EE) 1: /usr/bin/X (QueuePointerEvents+0x52) [0x44db12]
> (EE) 2: /usr/lib64/xorg/modules/input/evdev_drv.so (_init+0x2c4d) 
> [0x7f0229c61b1d]
> (EE) 3: /usr/bin/X (DPMSSupported+0xe8) [0x486498]
> (EE) 4: /usr/bin/X (xf86SerialModemClearBits+0x230) [0x4aea80]
> (EE) 5: /lib64/libpthread.so.0 (__restore_rt+0x0) [0x7f023077ef8f]
> (EE) 6: /lib64/libpixman-1.so.0 
> (_pixman_internal_only_get_implementation+0x2ae30) [0x37c04bae60]
> (EE) 7: /lib64/libpixman-1.so.0 
> (_pixman_internal_only_get_implementation+0x2b06b) [0x37c04bb34b]
> (EE) 8: /lib64/libpixman-1.so.0 (pixman_image_composite32+0x481) 
> [0x37c040b841]
> (EE) 9: /usr/lib64/xorg/modules/drivers/qxl_drv.so (_init+0x461d) 
> [0x7f022e021a3d]
> (EE) 10: /usr/lib64/xorg/modules/drivers/qxl_drv.so (_init+0x470f) 
> [0x7f022e021bbf]
> (EE) 11: /usr/lib64/xorg/modules/drivers/qxl_drv.so (_init+0xf617) 
> [0x7f022e037a07]
> (EE) 12: /usr/lib64/xorg/modules/drivers/qxl_drv.so (_init+0x1902f) 
> [0x7f022e04ae3f]
> (EE) 13: /usr/lib64/xorg/modules/drivers/qxl_drv.so (_init+0x127c9) 
> [0x7f022e03dd49]
> (EE) 14: /usr/bin/X (miPaintWindow+0x1d1) [0x577e61]
> (EE) 15: /usr/bin/X (miClearToBackground+0xfd) [0x58d7ad]
> (EE) 16: /usr/bin/X (dixDestroyPixmap+0x5dd) [0x433acd]
> (EE) 17: /usr/bin/X (SendErrorToClient+0x3f7) [0x437217]
> (EE) 18: /usr/bin/X (_init+0x3aa2) [0x429db2]
> (EE) 19: /lib64/libc.so.6 (__libc_start_main+0xf5) [0x7f022fa68b45]
> (EE) 20: /usr/bin/X (_start+0x29) [0x426a21]
> (EE) 21: ? (?+0x29) [0x29]
> (EE)
> (EE) [mi] These backtraces from mieqEnqueue may point to a culprit 
> higher up the stack.
> (EE) [mi] mieq is *NOT* the cause.  It is a victim.
> (EE) [mi] EQ overflow continuing.  100 events have been dropped.
> (EE) 
In attachment the full log.
Hope this is useful to solve the problem.
If further data is neeeded tell me and I'll post them.

Thanks for any reply.

Attachment: Xorg.0.log
Description: Text document

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