Let me try to explain my findings: > How does this magic sequence come? By dumping Win7 driver's init sequence and reproducing it through ALSA driver.
>why does it need to set UNSOL flag at first? No such need, I've put it after regular init so that only affected chipsets are reset again. Putting this anywhere around init code works (tried it). >Is the while loop guaranteed to quit for a reasonable time? Being household user, I can only confirm on my chipset. Only a thorough testing may ensure sanity. >Can't it be simply calling azx_reset() twice? It is interesting hardware bug which kicks in only during first init after power-on. So if Win7 driver in qemu inits the board, and I simply plugin "unchanged" hda_intel afterwards, it still detects codecs. But multiple normal resets do not have any effect. Being no hardware expert, I can only speculate that tight spin loop after reset has the crux. A normal delay call there does not detect codec. >And, yet another question comes up: doesn't S4 need the similar workaround? If >S4 works, what's the difference? Haven't tried with sleep-wake or hibernate-restore sequence yet. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1155202 Title: [Intel DZ77SL-50K, Intel PantherPoint HDMI, Digital Out, HDMI] No sound at all Status in “alsa-driver” package in Ubuntu: Incomplete Bug description: I am using ubuntu 10.04 I expected sound Got no sound at all I am very new to ubuntu so I have no idea how to find the version of the package I am using ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: alsa-base 1.0.25+dfsg-0ubuntu1.1 ProcVersionSignature: Ubuntu 3.2.0-38.61-generic-pae 3.2.37 Uname: Linux 3.2.0-38-generic-pae i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. AplayDevices: **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 ApportVersion: 2.0.1-0ubuntu17.1 Architecture: i386 ArecordDevices: **** List of CAPTURE Hardware Devices **** AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jan 1750 F.... pulseaudio Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xf7c30000 irq 45' Mixer name : 'Intel PantherPoint HDMI' Components : 'HDA:80862806,80860101,00100000' Controls : 7 Simple ctrls : 2 CurrentDmesg: [ 24.291482] eth0: no IPv6 routers present Date: Thu Mar 14 08:53:13 2013 InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release i386 (20120817.3) MarkForUpload: True PackageArchitecture: all ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_DevicesInUse: 1750 jan F.... pulseaudio PID ACCESS COMMAND Symptom_Jack: Digital Out, HDMI Symptom_Type: No sound at all Title: [, Intel PantherPoint HDMI, Digital Out, HDMI] No sound at all UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/19/2012 dmi.bios.vendor: Intel Corporation dmi.bios.version: SLZ7710H.86A.0055.2012.0319.2140 dmi.board.name: DZ77SL-50K dmi.board.vendor: Intel Corporation dmi.board.version: AAG55115-300 dmi.chassis.type: 3 dmi.modalias: dmi:bvnIntelCorporation:bvrSLZ7710H.86A.0055.2012.0319.2140:bd03/19/2012:svn:pn:pvr:rvnIntelCorporation:rnDZ77SL-50K:rvrAAG55115-300:cvn:ct3:cvr: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1155202/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
