From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugtrack@alsa-project.org Subject: [ALSA - driver 0001232]: Microphone in front bracket - very low volume Date: Fri, 13 Jan 2006 00:14:49 +0100 Message-ID: <333b69b76f0ee2d2a0c27473a9ca554e@bugtrack.alsa-project.org> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from bugtrack.alsa-project.org (gate.perex.cz [85.132.177.35]) by alsa.jcu.cz (ALSA's E-mail Delivery System) with ESMTP id 5ADEA144 for ; Fri, 13 Jan 2006 00:14:49 +0100 (MET) Sender: alsa-devel-admin@lists.sourceforge.net Errors-To: alsa-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org The following issue has been set as DUPLICATE OF issue 0001346. ====================================================================== ====================================================================== Reported By: jirka Assigned To: ====================================================================== Project: ALSA - driver Issue ID: 1232 Category: PCI - intel8x0 Reproducibility: always Severity: minor Priority: normal Status: new Distribution: latest Ubuntu, RedHat (I tried them both) Kernel Version: 2.6.10 ====================================================================== Date Submitted: 07-04-2005 16:47 CEST Last Modified: 01-13-2006 00:14 CET ====================================================================== Summary: Microphone in front bracket - very low volume Description: I have mainboard MicroStar K8N Neo2 Platinum-54G - nForce3 Ultra (it's nforce ultra chipset with integrated sound chip). This board has 7.1 audio and audio can be recorded via "sound in" jack (stereo jack connector) or "microphone" jack. These input jacks are placed on the back side of the case (on the mainboard). When I connect microphone to this jack and turn it on, it works great. But there is an option to connect some "sound bracket" to this board. You can buy computer case which has some input jacks on the front side and connect the cable from them to your mainboard. So you get two more jacks. One for phones and one for microphone. If you have headset (for internet telephony) with earphones and microphone, you don't need to connect them to the back side of your case. You connect them to the front side. And this is a problem. If I connect my microphone to the front "sound bracket", the volume is very very low. If I connect it to the back jack (integrated on motherboard), it works normally (I can record with normal volume). I think this is not a configuration problem. I tried every combination in alsamixer and nothing helps. Always front jack has very low audio. If I record something using it, I need set very high volume to hear something, if I play it. Lots of people has these computer cases with front bracket and think it's very confusing when it works normally in Windows and in Linux you cannot use the front connector. ====================================================================== Relationships ID Summary ---------------------------------------------------------------------- duplicate of 0001346 Nforce3-250 has no working support for ... ====================================================================== ---------------------------------------------------------------------- tiwai - 07-08-05 12:13 ---------------------------------------------------------------------- Can you record from the front mic? I mean, not the passthru but record to a file. It might be that the front mic is a separate secondary mic, which has to be handled differently. Anyway, more detailed h/w information is required. Please attach (upload) /proc/asound/card0/codec97#0/* files and /etc/asound.state file. ---------------------------------------------------------------------- jirka - 07-08-05 16:18 ---------------------------------------------------------------------- I´ve uploaded files you wanted. Recording to a file works ok. There is no difference if I select mic1 or mic2 in alsamixer (maybe part of problem?), it always records the sound.. The only difference is in the loudness of the sound. If microphone is connected to motherboard connector, volume is ¨normal¨. When it is in the front bracket, volume is very low (you have to turn volume to the maximum on amplifier to hear it). MICROPHONE IN BOARD/alsamixer MIC1 - normal volume MICROPHONE IN BOARD/alsamixer MIC2 - normal volume MICROPHONE IN FRONT BRACKET/alsamixer MIC1 - very low volume MICROPHONE IN FRONT BRACKET/alsamixer MIC2 - very low volume I also tried to turn off the 20dB mic boost. The results: MICROPHONE IN BOARD/alsamixer MIC1 - lower volume (but you can still hear it) MICROPHONE IN BOARD/alsamixer MIC2 - lower volume (but you can still hear it) MICROPHONE IN FRONT BRACKET/alsamixer MIC1 - very very very low volume (you have to turn volume to the maximum on amplifier and put you ear on the speaker) MICROPHONE IN FRONT BRACKET/alsamixer MIC2 - same as above Hope this helps. p.s. I´m leaving for holidays, so I cannot answer next 14 days. ---------------------------------------------------------------------- alchemyx - 08-18-05 23:03 ---------------------------------------------------------------------- I can confirm same issue with my hardware - Gigabyte K8NS motherboard with Nforce3-250 chipset and using i8x0 driver. It happens only with front panel mic. But there is no problem when using nvsound module from nvidia (but that driver sucks in everything else). ---------------------------------------------------------------------- vsu - 08-19-05 12:31 ---------------------------------------------------------------------- I see that you have the Realtek ALC850 codec. This codec has a separate input for the front-panel microphone, and there is a bit in a non-standard register (register 0x76, bit 15) which must be set to 0 to enable that input. I have made a patch which adds a mixer control for this bit; the patch was committed to ALSA CVS on 25 Apr 2005 and is included in alsa-driver-1.0.9 release. When you upgrade your ALSA drivers to that (or newer) release, you should see a switch named "Mic Front Input" in alsamixer; unmute this switch to use the microphone input on the front panel. Note that the motherboard connector is not disabled by this switch - signals from both inputs will be mixed. The switch is not enabled by default to avoid picking up noise if the front input is not used. For the record, I had this problem with the ASUS A8V motherboard, which has Realtek ALC850 too. ---------------------------------------------------------------------- alchemyx - 08-19-05 17:37 ---------------------------------------------------------------------- It did solve that issue. Thank you! By the way I see some nice changes in drivers (like easy choosing channels number, great). ---------------------------------------------------------------------- jirka - 08-20-05 09:36 ---------------------------------------------------------------------- I don't have time now to test the change, but if alchemyx says it's working I think it will work for me too. I thought I had the 1.0.9 version but now I found that my version is 1.0.9a so it probably makes a difference. I think you can select this bug as solved and #0001346 too. Thanks for great support and high quality software. ---------------------------------------------------------------------- alchemyx - 08-21-05 03:25 ---------------------------------------------------------------------- Keep in mind that versions appeared in following order: 2005-05-27 ALSA 1.0.9 final release 2005-06-02 ALSA 1.0.9a release 2005-06-07 ALSA 1.0.9b release 2005-08-20 ALSA 1.0.10rc1 release So if you have 1.0.9a it includes fixes from 1.0.9 also. I was testing with 1.0.9b and there was everything fine. Issue History Date Modified Username Field Change ====================================================================== 07-04-05 16:47 jirka New Issue 07-04-05 16:47 jirka Distribution => latest Ubuntu, RedHat (I tried them both) 07-04-05 16:47 jirka Kernel Version => 2.6.10 07-08-05 12:13 tiwai Note Added: 0005416 07-08-05 15:31 jirka File Added: ac97_0_0 07-08-05 15:31 jirka File Added: ac97_0_0_regs 07-08-05 15:34 jirka File Added: asound.state 07-08-05 16:18 jirka Note Added: 0005432 08-18-05 23:03 alchemyx Note Added: 0005860 08-18-05 23:04 alchemyx Issue Monitored: alchemyx 08-19-05 12:31 vsu Note Added: 0005867 08-19-05 17:37 alchemyx Note Added: 0005871 08-20-05 09:36 jirka Note Added: 0005872 08-21-05 03:25 alchemyx Note Added: 0005886 01-13-06 00:14 rlrevell Relationship added duplicate of 0001346 ====================================================================== ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. 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