I have the same trouble in Ubuntu 12.04,
Notebook: Acer aspire 5553G
Soundcard: Realtek ALC271X (Windows say that it is ALC269).
First I want to say that this is NOT Linux bug, this is Windows 7 bug, or
Realtek audio driver for Windows 7 bug.
So, I have not found a solution for Windows, but I found a workaround for Linux.
Workaround:
edit file: /etc/init.d/reboot
In function "do_stop ()" replace command "reboot -d -f -i" to the command
sequence:
=-=-=-=-
sync
echo u > /proc/sysrq-trigger
sleep 1s
echo b > /proc/sysrq-trigger
=-=-=-=-
Now I have working sound in Windows 7 after reboot from Ubuntu 12.04.
Workaround explanation:
I found that the driver (shd_hda_intel) during unloading/uninit completely
disables sound card. So this buggy Windows 7 cannot enable it again. To prevent
driver uninit while reboot, I do emergency reboot (like pressing Alt+SysRq+B)
instead of normal reboot, so kernel and drivers does not do uninit functions,
and soundcard stay enabled.
Using this workaround two days, seems like all goes fine. But be carefully,
there may be consequences.
P.S. Sorry for my english.
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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/1201372
Title:
Losing sound in Windows after rebooting from Linux (Realtek ALC269VB)
Status in “alsa-driver” package in Ubuntu:
Confirmed
Bug description:
When I reboot from Xubuntu 12.10 to Windows 7 I loose headphone sound
in Windows. I checked the volume levels and even reinstalled Realtek
audio drivers in Windows, but nothing has helped so far. Only
workaround is to shutdown notebook from Xubuntu 12.10 rather than
rebooting directly to Windows.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: alsa-base 1.0.25+dfsg-0ubuntu3.1
ProcVersionSignature: Ubuntu 3.5.0-36.57-generic 3.5.7.14
Uname: Linux 3.5.0-36-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.6.1-0ubuntu11
Architecture: amd64
Date: Mon Jul 15 13:18:40 2013
InstallationDate: Installed on 2013-01-17 (178 days ago)
InstallationMedia: Xubuntu 12.10 "Quantal Quetzal" - Release amd64
(20121017.1)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: alsa-driver
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/25/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 207
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: K53BR
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr207:bd04/25/2012:svnASUSTeKComputerInc.:pnK53BR:pvr1.0:rvnASUSTeKComputerInc.:rnK53BR:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
dmi.product.name: K53BR
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer Inc.
mtime.conffile..etc.modprobe.d.alsa.base.conf: 2013-07-15T12:54:29.052652
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