Ok, here's a good news. I believe I have a code change to overcome chip
bug.
A bit of debug description:
I collected couple of more win7 IOMMU traces. It turns out even win7
sometimes does not detect mask in first place. It did about 20
read/writes before reading mask again.
I mirrored those r/w in hda driver, which enabled the mask for me, and
selectively removed unneeded I/Os by trial and error.
The code is in azx_reset function. In my inference, it simply resets the
chip, but the exact timing between resetting the chip, polling reset bit
and setting reset bit is important. I tried playing with the delays, but
found only this combo to be working.
Added code it pretty crude, but I'd like to see a revised version of it
in ubuntu as well as upstream driver. Here is the code added:
snd_printk(KERN_ERR SFX "GCTL read %x\n",azx_readl(chip, GCTL));
azx_writel(chip, GCTL, 0x100);
do{
mytemp = azx_readl(chip, GCTL); /* mytemp delacred as
int, just a temperory to hold reads */
snd_printk(KERN_ERR SFX "GCTL read %x\n",mytemp);
}while(mytemp != 0x0);
azx_writel(chip, GCTL, 0x1);
usleep_range(1000, 1200);
mytemp = azx_readw(chip, STATESTS);
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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:
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