郁闷啊,我从xorg-server-1.6.1.9xx升级到1.6.2以后,混合扩展就失效了,OpenGL也有问题,表现为glxgears只显示一个黑窗口,如果移动这个窗口,就在里面显示支离破碎的画面,dmesg有如下输出:
[drm:drm_wait_vblank] *ERROR* failed to acquire vblank counter, -22
[drm:drm_wait_vblank] *ERROR* failed to acquire vblank counter, -22
nepomukservices[15420]: segfault at 7fa00000008d ip 00007fa02f0d2230 sp 00007fff07c1c240 error 4 in libQtCore.so.4.5.1[7fa02f075000+241000]
nepomukservices[21110]: segfault at 30000008d ip 00007fdc7fce9230 sp 00007fff1ec8cf00 error 4 in libQtCore.so.4.5.1[7fdc7fc8c000+241000]
[drm:drm_wait_vblank] *ERROR* failed to acquire vblank counter, -22
nepomukservices[21426]: segfault at 7f450000008d ip 00007f453b0b5230 sp 00007fffa60b2c90 error 4 in libQtCore.so.4.5.1[7f453b058000+241000]
[drm:drm_wait_vblank] *ERROR* failed to acquire vblank counter, -22
NET: Registered protocol family 10
lo: Disabled Privacy Extensions
eth0: no IPv6 routers present
nepomukservices[29646]: segfault at 7ffc0000008d ip 00007ffc5b754230 sp 00007fff3cbb0a50 error 4 in libQtCore.so.4.5.1[7ffc5b6f7000+241000]
[drm:drm_wait_vblank] *ERROR* failed to acquire vblank counter, -22
nepomukservices[30175]: segfault at 7fbd0000008d ip 00007fbd0deeb230 sp 00007fff33043da0 error 4 in libQtCore.so.4.5.1[7fbd0de8e000+241000]
nepomukservices[30656]: segfault at 8d ip 00007fc8e840f230 sp 00007fff1dba3c80 error 4 in libQtCore.so.4.5.1[7fc8e83b2000+241000]
[drm:drm_wait_vblank] *ERROR* failed to acquire vblank counter, -22
nepomukservices[23099]: segfault at 40000008d ip 00007fa907ae7230 sp 00007fff9edb84d0 error 4 in libQtCore.so.4.5.1[7fa907a8a000+241000]
[drm:drm_wait_vblank] *ERROR* failed to acquire vblank counter, -22
目前,已经有人报告bug了。
Gentoo Bug 278119 - =x11-drivers/xf86-video-intel-2.7.99.902: glxgears shows nothing
Gentoo Bug 277310 - Compositing is broken with xorg-server 1.6.2 and intel graphics
而且不仅gentoo,其他发行版也有问题
Bug#537400: xserver-xorg-video-intel: GM45 2.8rc regression: glxgears: [tor need]
我重新编译了qt-core,qt-gui和qt-opengl但不能解决问题。
最终,很郁闷的发现,升级基于Gallium3D的mesa-7.5之后,黑屏的问题解决了。只是nepomukservices[15420]: segfault依旧,不过不影响使用了。