From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: No sound from speakers with Realtek ALC3226 Date: Wed, 25 Feb 2015 11:35:34 +0100 Message-ID: References: Mime-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mx2.suse.de (cantor2.suse.de [195.135.220.15]) by alsa0.perex.cz (Postfix) with ESMTP id F1B09260639 for ; Wed, 25 Feb 2015 11:35:34 +0100 (CET) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: John Frankish Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org At Wed, 25 Feb 2015 13:25:35 +0400, John Frankish wrote: > > > > > > > > > > > I posted this on the alsa-user list, but did not get a reply. > > > > > > > > > > Although it occasionally works, I am usually unable to get any > > > > > sound out of the speakers on a dell latitude e7240 using > > > > > alsa-1.0.28 and > > > > > linux-3.16.6 - see details at the end of the post. > > > > > > > > If so, Windows or BIOS is the problem. It doesn't set up the pin > configuration properly Linux driver relies on. > > > > > > > I just updated the bios to the latest version, but no change :( > > > > > > > > If you get the status where the speaker works (e.g. after Windows > clean > > > reboot), try to take alsa-info.sh snapshot. Run alsa-> info.sh with > > > --no-upload option, and save the generated output. Then, take another > > > alsa-info.sh snapshot while the speaker > doesn't work. Compare these > > > two outputs. (At best, attach both (compressed) files.) > > > > > > > Alsa_info_works and alsa_info_no_works attached - diff didn't show an > > > obvious difference between getting sound from the speakers and not > > > getting sound from the speakers. > > > > OK, then this is not about the pin configuration, but likely the EAPD > setup BIOS does. > > > > Did you try the newer kernels? There has been a fix for EAPD control, and > this might already fix your problem. > > I'd rather patch my current kernel if possible - do you know where the EPAD > control patch is by any chance? Look through git log of sound/pci/hda/patch_realtek.c. But beware that the patches won't be applied cleanly; otherwise I would have marked them for stable. But I'll ask for testing with the newer kernels in anyway if patching fails, so... Takashi