At Mon, 17 Jan 2011 20:54:29 +0530, Avinash Kurup wrote:
Hi Takashi,
The sound on my computer since 2.6.37-rc1+ is barely audible (extremely soft), The sound remains the same even on increasing it on the desktop or the application.
On accessing alsa-mixer I get the error, cannot load mixer controls: Invalid argument.
I bisected the problem to this commit.
03b7a1ab557efe34e8f79b78660e514bd7374248 is the first bad commit commit 03b7a1ab557efe34e8f79b78660e514bd7374248 Author: David Henningsson david.henningsson@canonical.com Date: Tue Nov 9 14:35:30 2010 +0100
ALSA: HDA: Create mixers on ALC887 BugLink: http://launchpad.net/bugs/669092 ALC887 does not have any volume control ability on the mixer NIDs, so put the volume controls on the dac NIDs instead. Without this patch, ALC887 users cannot use alsamixer at all. Cc: stable@kernel.org Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>:040000 040000 f1e34cf6301ebd2ee2108af5195e2786c135e348 1e5d012759d201af4102a822dd94328080aa3a0b M sound
Other related info...
avinash@neurolink:~/GIT_KERNEL_REPO/linux-2.6$ uname -a Linux neurolink 2.6.37-rc1+ #164 SMP Mon Jan 17 20:15:43 IST 2011 x86_64 GNU/Linux
Could you get alsa-info.sh output (run with --no-upload option) on the old working kernel? If so, please attach the output. Anyway, please give alsa-info.sh output on the broken kernel, too.
thanks,
Takashi