Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759004AbYF2KgV (ORCPT ); Sun, 29 Jun 2008 06:36:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754428AbYF2KgK (ORCPT ); Sun, 29 Jun 2008 06:36:10 -0400 Received: from saeurebad.de ([85.214.36.134]:58215 "EHLO saeurebad.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754195AbYF2KgI (ORCPT ); Sun, 29 Jun 2008 06:36:08 -0400 From: Johannes Weiner To: Takashi Iwai Cc: Jaroslav Kysela , linux-kernel@vger.kernel.org Subject: Re: Longstanding bug in ac97/intel8x0 resume/init References: <87hcca3xkx.fsf@saeurebad.de> Date: Sun, 29 Jun 2008 12:35:31 +0200 In-Reply-To: <87hcca3xkx.fsf@saeurebad.de> (Johannes Weiner's message of "Wed, 04 Jun 2008 01:31:10 +0200") Message-ID: <8763rsa5qk.fsf@skyscraper.fehenstaub.lan> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.1.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4883 Lines: 208 Johannes Weiner writes: > Hi, > > my laptop has muted sound after resuming the soundcard (by > s2ram/hibernation). The problem seems to be that the cached register > values are not written back to the device properly. > > Before suspend, the registers look like this: > > 0:00 = 1990 > 0:02 = 0000 > 0:04 = 9f1f > 0:06 = 801f > 0:08 = 0000 > 0:0a = 801e > 0:0c = 801f > 0:0e = 801f > 0:10 = 9f1f > 0:12 = 9f1f > 0:14 = 9f1f > 0:16 = 9f1f > 0:18 = 0b0b > 0:1a = 0000 > 0:1c = 0000 > 0:1e = 0000 > 0:20 = 0000 > 0:22 = 0000 > 0:24 = 0000 > 0:26 = 000f > 0:28 = 0201 > 0:2a = 0001 > 0:2c = bb80 > 0:2e = 0000 > 0:30 = 0000 > 0:32 = bb80 > 0:34 = 0000 > 0:36 = 0000 > 0:38 = 0000 > 0:3a = 0000 > 0:3c = 0000 > 0:3e = 0000 > 0:40 = 0000 > 0:42 = 0000 > 0:44 = 0000 > 0:46 = 0000 > 0:48 = 0000 > 0:4a = 0000 > 0:4c = 0000 > 0:4e = 0000 > 0:50 = 0000 > 0:52 = 0000 > 0:54 = 0000 > 0:56 = ffff > 0:58 = 0000 > 0:5a = 0604 > 0:5c = 0000 > 0:5e = 0080 > 0:60 = 0023 > 0:62 = 0000 > 0:64 = 0000 > 0:66 = 0000 > 0:68 = 0824 > 0:6a = 0000 > 0:6c = 0000 > 0:6e = 0000 > 0:70 = 0000 > 0:72 = 0000 > 0:74 = 0000 > 0:76 = 0000 > 0:78 = 003c > 0:7a = 0000 > 0:7c = 4352 > 0:7e = 5936 > > and right after a resume, they look like this (annotations by me): > > 0:00 = 1990 > 0:02 = 8000 ! Master Volume > 0:04 = 8000 ! Headphone Volume > 0:06 = 8000 ! Master Mono Volume > 0:08 = 0000 > 0:0a = 0000 ! PC Beep Volume > 0:0c = 8008 ! Phone Volume > 0:0e = 8008 ! Mic Volume > 0:10 = 8808 ! Line In Volume > 0:12 = 8808 ! CD Volume > 0:14 = 8808 ! Video Volume > 0:16 = 8808 ! AUX Volume > 0:18 = 8808 ! PCM Volume > 0:1a = 0000 > 0:1c = 8000 ! Record gain > 0:1e = 0000 > 0:20 = 0000 > 0:22 = 0000 > 0:24 = 0000 > 0:26 = 000f > 0:28 = 0201 > 0:2a = 0001 > 0:2c = bb80 > 0:2e = 0000 > 0:30 = 0000 > 0:32 = bb80 > 0:34 = 0000 > 0:36 = 0000 > 0:38 = 0000 > 0:3a = 0000 > 0:3c = 0000 > 0:3e = 0000 > 0:40 = 0000 > 0:42 = 0000 > 0:44 = 0000 > 0:46 = 0000 > 0:48 = 0000 > 0:4a = 0000 > 0:4c = 0000 > 0:4e = 0000 > 0:50 = 0000 > 0:52 = 0000 > 0:54 = 0000 > 0:56 = ffff > 0:58 = 0000 > 0:5a = 0604 > 0:5c = 0000 > 0:5e = 0080 > 0:60 = 0023 > 0:62 = 0000 > 0:64 = 0000 > 0:66 = 0000 > 0:68 = 0824 > 0:6a = 0000 > 0:6c = 0000 > 0:6e = 0000 > 0:70 = 0000 > 0:72 = 0000 > 0:74 = 0000 > 0:76 = 0000 > 0:78 = 003c > 0:7a = 0000 > 0:7c = 4352 > 0:7e = 5936 > > When I run alsamixer and change around the values of Master and PCM in a > purely random way - a bit higher/lower, mute/unmute, etc. - sound comes > back to life. > > I remember to `fix' this by adding more delays between waking the device > and syncing back the cache. But I think that took up to 6 seconds, > sometimes, so there must be something else going on (see below). > > The chip is the following: > > 0-0/0: Cirrus Logic CS4299 rev 6 > > PCI Subsys Vendor: 0x1014 > PCI Subsys Device: 0x0222 > > Capabilities : -headphone out- > DAC resolution : 20-bit > ADC resolution : 18-bit > 3D enhancement : Crystal Semi 3D Stereo Enhancement > > Current setup > Mic gain : +0dB [+0dB] > POP path : pre 3D > Sim. stereo : off > 3D enhancement : off > Loudness : off > Mono output : MIX > Mic select : Mic1 > ADC/DAC loopback : off > Extended ID : codec=0 rev=0 AMAP DSA=0 VRA > Extended status : VRA > PCM front DAC : 48000Hz > PCM ADC : 48000Hz > SPDIF Control : Consumer PCM Copyright Category=0x22 Generation=1 Rate=48kHz > > Something else is strange, too. When I have the driver as a module and > unload it once, another load will succeed module-wise but the device is > unusable then. Here is the dmesg snippet: > > [ 1462.343612] ACPI: PCI interrupt for device 0000:00:1f.5 disabled > [ 1487.092547] ACPI: PCI Interrupt 0000:00:1f.5[B] -> Link [LNKB] -> GSI 11 (level, low) -> IRQ 11 > [ 1487.094499] PCI: Setting latency timer of device 0000:00:1f.5 to 64 > [ 1488.347180] ALSA sound/pci/ac97/ac97_codec.c:2053: AC'97 0 does not respond - RESET > [ 1488.347442] ACPI: PCI interrupt for device 0000:00:1f.5 disabled > [ 1488.347569] Intel ICH: probe of 0000:00:1f.5 failed with error -13 > > After another unload-load cycle, I get a working device again and this > in dmesg: > > [ 2623.093209] ACPI: PCI Interrupt 0000:00:1f.5[B] -> Link [LNKB] -> GSI 11 (level, low) -> IRQ 11 > [ 2623.095264] PCI: Setting latency timer of device 0000:00:1f.5 to 64 > [ 2623.975121] intel8x0_measure_ac97_clock: measured 50399 usecs > [ 2623.975268] intel8x0: clocking to 48000 > > Please let me know if you need more information to debug this issue. > It's really annoying :/ > > Many thanks in advance, > Hannes Ping? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/