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Logicien
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Location: Montréal
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 Posted: Thu May 06, 2010 2:13 am Post subject: [Solved] dead audio channel until maximum volume |
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I have an HP compaq nx9110 with Ati chipset. The left channel is down periodicly. The only way to activate it then, is to put the volume to the maximum. Both channels become correct. I am on Debian Sid (I say it) with kernel 2.6.32 vanilla. On XP I have that problem to. So what kind of problem is that, a software, a hardware or both? Thank's for any help !
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Last edited by Logicien on Thu May 13, 2010 4:32 pm; edited 2 times in total |
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PaulBredbury
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| Posted: Thu May 06, 2010 3:20 am Post subject: |
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If I had to guess, I'd say it was a hardware problem. It's too unlikely for the Windows driver and ALSA to have the exact same bug.
You should google for your model number with alsa, and see if other people have it working OK. |
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Logicien
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| Posted: Thu May 13, 2010 4:29 pm Post subject: |
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I had problem with channel who was dead and flashplugin who stop working at any time. The source of thoses problems came from cpu frequency that I configure for conservative governor. It seem's that my HP compaq nx9110 need full processor speed or performance governor for sound and video. Since I use performance governor everythings in multimedia are ok at the cost of a bit more noisy fan and higher temperature.
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PaulBredbury
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| Posted: Thu May 13, 2010 5:02 pm Post subject: |
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| Logicien wrote: | | need full processor speed |
Did you investigate further, and see *which* power-saving state you need to disable? |
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Logicien
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| Posted: Thu May 13, 2010 5:29 pm Post subject: |
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No. I tried conservative, ondemand and performance governors with cpufreqd deamon. The thing I wanted with cpu frequency scaling was to have the lowest speed when the system is idle. Since I use performance governor, I can't have that and I am now sceptic about this cooling technic. It seem's safer to use full processor speed for at least stability and needed performance at any time.
| Code: | pot 06:39 ~ $ acpitool -e
Kernel version : 2.6.33-ARCH - ACPI version : 20091214
-----------------------------------------------------------
Battery #1 : slot empty
AC adapter : on-line
Fan : <not available>
CPU type : Mobile Intel(R) Pentium(R) 4 CPU 3.06GHz
Min/Max frequency : 1596/3059 MHz
Current frequency : 3059 MHz
Frequency governor : performance
Freq. scaling driver : acpi-cpufreq
Cache size : 512 KB
Bogomips : 6134.71
Processor ID : 0
Bus mastering control : yes
Power management : yes
Throttling control : no
Limit interface : no
Active C-state : C0
C-states (incl. C0) : 2
Usage of state C1 : 2021121 (99.1 %)
Thermal zone 1 : ok, 55 C
Trip points :
-------------
critical (S5): 82 C
passive (forced):<not set>
Device S-state Status Sysfs node
---------------------------------------
1. ELAN S3 disabled pci:0000:02:03.0
2. USB0 S3 disabled pci:0000:02:07.0
3. USB1 S3 disabled pci:0000:02:07.1
4. USB2 S3 disabled pci:0000:02:07.2
5. KBC0 S3 disabled pnp:00:05
6. MSE0 S3 disabled pnp:00:06
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PaulBredbury
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| Posted: Thu May 13, 2010 6:40 pm Post subject: |
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| Logicien wrote: | | lowest speed |
You're not making sense. Maybe you can make do with second-lowest speed. Why would that be unacceptable? Have you tried? |
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Logicien
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| Posted: Thu May 13, 2010 8:21 pm Post subject: |
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I have only 2 speeds for scaling:
| Code: | pot 16:17 ~ $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
3059000 1596000
pot 16:18 ~ $
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Because the 1596000 frequency cause me problems with audios channels (left or right is dead, but not both) and flash animations I must use 3059000 frequency and hopefully it resolv the problems.
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Kernel & Hardware
