[alsa-devel] Sound not working after new kernel installed
Hello everybody,
I don't know if my question is right here, but either way I am asking:
I am using an old Benq notebook (Joybook S73) mit Xubuntu 15.04. When I installed a new kernel (then 3.19.0-16, but now I am using 3.19.0.28) the sound on the speakers stoped working and there were no more audible sounds. With headphones plugged in and a the highest possible volume I could hear very silent the music played on the PC.
Up to Kernel 3.2.0-70 the sound worked fine.
System update and upgrade unfortunately did not help. Do you have any idea what may be the problem?
I did the following to show the chip used:
simon@simon-Joybook-S73:~$ lspci -nnk | grep -i audio -A2
00:1b.0 Audio device [0403]: Intel Corporation NM10/ICH7 Family High Definition Audio Controller [8086:27d8] (rev 02)
Subsystem: Benq Corporation Device [17ff:0600]
Kernel driver in use: snd_hda_intel
simon@simon-Joybook-S73:~$ cat /proc/asound/cards
0 [Intel ]: HDA-Intel - HDA Intel
HDA Intel at 0x6c400000 irq 29
Thank you for your help!
Simon
On Wed, Oct 14, 2015 at 02:22:59PM +0200, Simon Wolk wrote:
I am using an old Benq notebook (Joybook S73) mit Xubuntu 15.04. When I installed a new kernel (then 3.19.0-16, but now I am using 3.19.0.28) the sound on the speakers stoped working and there were no more audible sounds. With headphones plugged in and a the highest possible volume I could hear very silent the music played on the PC.
Up to Kernel 3.2.0-70 the sound worked fine.
Does 3.2.0-70 still work fine?
A friend's laptop had an electrostatic discharge or electrical event that damaged the audio codec chip, taking out the headphone detect and headphone amp, and it showed almost same symptoms as you describe. On that laptop, patching the kernel to force the headphone not present fixed playback from speakers. I'm not suggesting that, but if you can say the old kernel still works fine you can exclude damage as cause.
That leaves you with looking at the difference between 3.2.0 and 3.19.0, for the driver in use.
Try other kernels between the two, to figure out which kernel introduced the change.
On Wed, 14 Oct 2015 14:22:59 +0200, Simon Wolk wrote:
Hello everybody,
I don't know if my question is right here, but either way I am asking:
I am using an old Benq notebook (Joybook S73) mit Xubuntu 15.04. When I installed a new kernel (then 3.19.0-16, but now I am using 3.19.0.28) the sound on the speakers stoped working and there were no more audible sounds. With headphones plugged in and a the highest possible volume I could hear very silent the music played on the PC.
3.19 is also already fairly old. Use the later kernel for debugging.
Up to Kernel 3.2.0-70 the sound worked fine.
Please give alsa-info.sh outputs on both working (3.2) and the latest kernels. Run it with --no-upload option, and attach them. Better gzip them to avoid the size limit on ML.
Takashi
participants (3)
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James Cameron -
Simon Wolk -
Takashi Iwai