[SOLVED] Latest updates to -current broke alt-tab in kde
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After applying the 31st Jan and 1st Feb updates to -current (32 bit), alt-tab to switch between windows is no longer working in kde. It seems to lock the desktop and then after a few seconds kde goes back to the login screen. If I disable all desktop effects then alt-tab works again. Is anyone else seeing this? Any suggestions for a fix? I will keep investigating.
I did some more investigation and have had some more apparently random lockups in kde. This may be a problem with Mesa 7.10. I went back to 7.9 and the problems have gone away. For info, I am seeing these problems on a Lenovo T410 laptop with integrated Intel graphics.
lspci -v shows -
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device 215a
Flags: bus master, fast devsel, latency 0, IRQ 48
Memory at f2000000 (64-bit, non-prefetchable) [size=4M]
Memory at d0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 1800 [size=8]
Expansion ROM at <unassigned> [disabled]
Capabilities:  MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
Kernel driver in use: i915
Kernel modules: i915
I have similar specs (on board intel video with a Dell desktop) and also experience odd desktop effect related issues with -current. Except in mine the system freezes then kicks me back out to KDM. Disabling desktop effects seems to have eliminated all freezes.
Since reporting this problem I have been running mesa-7.9_ccc11aa-i486-1 in -current with no problems. Today I thought I would try mesa-7.10.1-i486-1 as included in 13.37 /testing. This also is working ok for me. So, it seems that the changes from 7.10 to 7.10.1 solved my lockups.