At Sat, 17 Apr 2010 11:06:22 +0200, Frans Pop wrote:
On Friday 16 April 2010, Frans Pop wrote:
Scenario:
- suspend laptop while *un*docked, i.e. with laptop speakers in use
- dock laptop
- resume
With 2.6.33 and earlier the sound would always come from the external speakers connected to the docking station. But with 2.6.34-rc4 I get sound still coming from the laptop's internal speakers, which is not correct.
The problem is slightly different than I thought. Turns out *both* the internal (laptop) and external (docking station) speakers are active after the resume. So the problem is that the internal speakers are not switched off.
I have traced this to an ALSA merge: 524df55725217. Unfortunately I get boot failures when I try to bisect down into that merge.
Here's the bisect log: # bad: [0d0fb0f9c5fddef4a10242fe3337f00f528a3099] Linux 2.6.34-rc4 # good: [724e6d3fe8003c3f60bf404bf22e4e331327c596] Linux 2.6.33-rc8 git bisect start 'v2.6.34-rc4' 'v2.6.33-rc8' # bad: [94468080220162f74dc6ce5c3e95e5fec8022902] Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6 git bisect bad 94468080220162f74dc6ce5c3e95e5fec8022902 # bad: [524df55725217b13d5a232fb5badb5846418ea0e] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 git bisect bad 524df55725217b13d5a232fb5badb5846418ea0e # good: [0f4533979473a456a8adb3869365e12c7a99cf65] Merge branches 'futexes-for-linus', 'irq-core-for-linus' and 'bkl-drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip git bisect good 0f4533979473a456a8adb3869365e12c7a99cf65
Could you give alsa-info.sh on your machine, preferably before/after suspend on both working (2.6.33) and non-working kernels?
Also, you can try to copy sound/pci/hda/patch_analog.c from 2.6.33 to 2.6.34 to check whether it works. There shouldn't be many changes in that file.
thanks,
Takashi