CentOS 6.2 audio and video playback are slightly too fast or skippy

Issues related to hardware problems
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pianodreamer
Posts: 4
Joined: 2012/01/16 01:52:10

CentOS 6.2 audio and video playback are slightly too fast or skippy

Post by pianodreamer » 2012/01/17 05:30:05

Hello,

I just installed CentOS 6.2 on an older machine.

When I play videos in totem, the audio and video are synced, but slightly too fast and the audio is pitch shifted up. If if play the same file in VLC, the video is smoth, and the audio has no pitch shift, but every couple of seconds it will cut out for a fraction of a second.

I did some googling, and found some bug reports for fedora describing similar behavior with the same sound card that I have, but a different kernel.

https://bugzilla.redhat.com/show_bug.cgi?id=496119
https://bugzilla.redhat.com/show_bug.cgi?id=441087

As per this suggestion: https://bugzilla.redhat.com/show_bug.cgi?id=441087#c17 I created a file /etc/modprobe.conf in gedit and added the following text:

[code]options snd_intel8x0 ac97_clock=48000[/code]

I restarted my computer, and now there is no skipping in vlc or totem, but the playback is slow and the audio is pitch shifted [i]down[/i].

At this point I've run out of ideas. Anyone else have any?


getinfo.sh output:

Information for general problems.
[code]
== BEGIN uname -rmi ==
2.6.32-220.2.1.el6.i686 i686 i386
== END uname -rmi ==

== BEGIN rpm -qa \*-release\* ==
adobe-release-i386-1.0-1.noarch
centos-release-6-2.el6.centos.7.i686
epel-release-6-5.noarch
rpmforge-release-0.5.2-2.el6.rf.i686
== END rpm -qa \*-release\* ==

== BEGIN cat /etc/redhat-release ==
CentOS release 6.2 (Final)
== END cat /etc/redhat-release ==

== BEGIN getenforce ==
Enforcing
== END getenforce ==

== BEGIN free -m ==
total used free shared buffers cached
Mem: 482 460 22 0 41 242
-/+ buffers/cache: 176 305
Swap: 991 0 991
== END free -m ==

== BEGIN rpm -qa yum\* rpm-\* python | sort ==
python-2.6.6-29.el6.i686
rpm-libs-4.8.0-19.el6.i686
rpm-python-4.8.0-19.el6.i686
yum-3.2.29-22.el6.centos.noarch
yum-metadata-parser-1.1.2-16.el6.i686
yum-plugin-fastestmirror-1.1.30-10.el6.noarch
yum-plugin-security-1.1.30-10.el6.noarch
yum-utils-1.1.30-10.el6.noarch
== END rpm -qa yum\* rpm-\* python | sort ==

== BEGIN ls /etc/yum.repos.d ==
adobe-linux-i386.repo
CentOS-Base.repo
CentOS-Debuginfo.repo
CentOS-Media.repo
epel.repo
epel-testing.repo
mirrors-rpmforge
mirrors-rpmforge-extras
mirrors-rpmforge-testing
rpmforge.repo
== END ls /etc/yum.repos.d ==

== BEGIN cat /etc/yum.conf ==
[main]
cachedir=/var/cache/yum/$basearch/$releasever
keepcache=0
debuglevel=2
logfile=/var/log/yum.log
exactarch=1
obsoletes=1
gpgcheck=1
plugins=1
installonly_limit=5
bugtracker_url=http://bugs.centos.org/set_project.php?project_id=16&ref=http://bugs.centos.org/bug_report_page.php?category=yum
distroverpkg=centos-release

# This is the default, if you make this bigger yum won't see if the metadata
# is newer on the remote and so you'll "gain" the bandwidth of not having to
# download the new metadata and "pay" for it by yum not having correct
# information.
# It is esp. important, to have correct metadata, for distributions like
# Fedora which don't keep old packages around. If you don't like this checking
# interupting your command line usage, it's much better to have something
# manually check the metadata once an hour (yum-updatesd will do this).
# metadata_expire=90m

# PUT YOUR REPOS HERE OR IN separate files named file.repo
# in /etc/yum.repos.d
== END cat /etc/yum.conf ==

== BEGIN yum repolist all ==
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
* base: mirror.spro.net
* extras: mirrors.kernel.org
* rpmforge: ftp-stud.fht-esslingen.de
* updates: mirror.5ninesolutions.com
repo id repo name status
adobe-linux-i386 Adobe Systems Incorporated enabled: 17
base CentOS-6 - Base enabled: 4,764
c6-media CentOS-6 - Media disabled
centosplus CentOS-6 - Plus disabled
contrib CentOS-6 - Contrib disabled
debug CentOS-6 - Debuginfo disabled
epel Extra Packages for Enterprise Linux 6 - i3 disabled
epel-debuginfo Extra Packages for Enterprise Linux 6 - i3 disabled
epel-source Extra Packages for Enterprise Linux 6 - i3 disabled
epel-testing Extra Packages for Enterprise Linux 6 - Te disabled
epel-testing-debuginfo Extra Packages for Enterprise Linux 6 - Te disabled
epel-testing-source Extra Packages for Enterprise Linux 6 - Te disabled
extras CentOS-6 - Extras enabled: 3
rpmforge RHEL 6 - RPMforge.net - dag enabled: 4,142
rpmforge-extras RHEL 6 - RPMforge.net - extras disabled
rpmforge-testing RHEL 6 - RPMforge.net - testing disabled
updates CentOS-6 - Updates enabled: 156
repolist: 9,082
== END yum repolist all ==

== BEGIN egrep 'include|exclude' /etc/yum.repos.d/*.repo ==
== END egrep 'include|exclude' /etc/yum.repos.d/*.repo ==

== BEGIN sed -n -e "/^\[/h; /priority *=/{ G; s/\n/ /; s/ity=/ity = /; p }" /etc/yum.repos.d/*.repo | sort -k3n ==
== END sed -n -e "/^\[/h; /priority *=/{ G; s/\n/ /; s/ity=/ity = /; p }" /etc/yum.repos.d/*.repo | sort -k3n ==

== BEGIN cat /etc/fstab ==

#
# /etc/fstab
# Created by anaconda on Thu Jan 12 03:01:33 2012
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/vg_c76104200230-lv_root / ext4 defaults 1 1
UUID=06d075f1-63bf-4545-8b9a-5b7447ffa65c /boot ext4 defaults 1 2
/dev/mapper/vg_c76104200230-lv_swap swap swap defaults 0 0
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
== END cat /etc/fstab ==

== BEGIN df -h ==
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_c76104200230-lv_root
17G 6.0G 11G 36% /
tmpfs 242M 364K 241M 1% /dev/shm
/dev/sdc2 485M 51M 409M 12% /boot
/dev/sda1 466G 395G 72G 85% /media/TOSHIBA EXT-1
== END df -h ==

== BEGIN fdisk -l ==
Disk /dev/mapper/vg_c76104200230-lv_root doesn't contain a valid partition table
Disk /dev/mapper/vg_c76104200230-lv_swap doesn't contain a valid partition table

Disk /dev/sdc: 40.0 GB, 40020664320 bytes
207 heads, 18 sectors/track, 20978 cylinders
Units = cylinders of 3726 * 512 = 1907712 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00021894

Device Boot Start End Blocks Id System
/dev/sdc1 * 1 10488 19539135 7 HPFS/NTFS
/dev/sdc2 10489 10764 512000 83 Linux
/dev/sdc3 10764 20978 19030016 8e Linux LVM

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x7c225f15

Device Boot Start End Blocks Id System
/dev/sda1 1 60802 488384536 7 HPFS/NTFS

Disk /dev/sdb: 4098 MB, 4098883584 bytes
127 heads, 62 sectors/track, 1016 cylinders
Units = cylinders of 7874 * 512 = 4031488 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Device Boot Start End Blocks Id System

Disk /dev/mapper/vg_c76104200230-lv_root: 18.4 GB, 18442354688 bytes
255 heads, 63 sectors/track, 2242 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/vg_c76104200230-lv_swap: 1040 MB, 1040187392 bytes
255 heads, 63 sectors/track, 126 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

== END fdisk -l ==

== BEGIN blkid ==
/dev/sdc1: UUID="D058A74658A72A64" TYPE="ntfs"
/dev/sdc2: UUID="06d075f1-63bf-4545-8b9a-5b7447ffa65c" TYPE="ext4"
/dev/sdc3: UUID="lCHiGa-Jkgd-zJ4L-Iq7u-zU11-k1e0-f04e11" TYPE="LVM2_member"
/dev/sda1: LABEL="TOSHIBA EXT" UUID="68E22087E2205B96" TYPE="ntfs"
/dev/mapper/vg_c76104200230-lv_root: LABEL="_CentOS-6.2-i386" UUID="aebfe2d9-687a-4adb-9ac5-a91874907811" TYPE="ext4"
/dev/sdb: UUID="0123-4567" TYPE="vfat"
/dev/mapper/vg_c76104200230-lv_swap: UUID="5634c9e7-e3c0-4381-b18c-75525907b397" TYPE="swap"
== END blkid ==

== BEGIN cat /proc/mdstat ==
Personalities :
unused devices: <none>
== END cat /proc/mdstat ==

== BEGIN pvs ==
PV VG Fmt Attr PSize PFree
/dev/sdc3 vg_c76104200230 lvm2 a-- 18.14g 0
== END pvs ==

== BEGIN vgs ==
VG #PV #LV #SN Attr VSize VFree
vg_c76104200230 1 2 0 wz--n- 18.14g 0
== END vgs ==

== BEGIN lvs ==
LV VG Attr LSize Origin Snap% Move Log Copy% Convert
lv_root vg_c76104200230 -wi-ao 17.18g
lv_swap vg_c76104200230 -wi-ao 992.00m
== END lvs ==

== BEGIN rpm -qa kernel\* | sort ==
kernel-2.6.32-220.2.1.el6.i686
kernel-2.6.32-220.el6.i686
kernel-firmware-2.6.32-220.2.1.el6.noarch
== END rpm -qa kernel\* | sort ==

== BEGIN lspci -nn ==
00:00.0 Host bridge [0600]: Intel Corporation 82865G/PE/P DRAM Controller/Host-Hub Interface [8086:2570] (rev 02)
00:02.0 VGA compatible controller [0300]: Intel Corporation 82865G Integrated Graphics Controller [8086:2572] (rev 02)
00:03.0 PCI bridge [0604]: Intel Corporation 82865G/PE/P PCI to CSA Bridge [8086:2573] (rev 02)
00:06.0 System peripheral [0880]: Intel Corporation 82865G/PE/P Processor to I/O Memory Interface [8086:2576] (rev 02)
00:1d.0 USB controller [0c03]: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #1 [8086:24d2] (rev 02)
00:1d.1 USB controller [0c03]: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #2 [8086:24d4] (rev 02)
00:1d.2 USB controller [0c03]: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #3 [8086:24d7] (rev 02)
00:1d.3 USB controller [0c03]: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #4 [8086:24de] (rev 02)
00:1d.7 USB controller [0c03]: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller [8086:24dd] (rev 02)
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev c2)
00:1f.0 ISA bridge [0601]: Intel Corporation 82801EB/ER (ICH5/ICH5R) LPC Interface Bridge [8086:24d0] (rev 02)
00:1f.1 IDE interface [0101]: Intel Corporation 82801EB/ER (ICH5/ICH5R) IDE Controller [8086:24db] (rev 02)
00:1f.2 IDE interface [0101]: Intel Corporation 82801EB (ICH5) SATA Controller [8086:24d1] (rev 02)
00:1f.3 SMBus [0c05]: Intel Corporation 82801EB/ER (ICH5/ICH5R) SMBus Controller [8086:24d3] (rev 02)
00:1f.5 Multimedia audio controller [0401]: Intel Corporation 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller [8086:24d5] (rev 02)
02:01.0 Ethernet controller [0200]: Intel Corporation 82547EI Gigabit Ethernet Controller [8086:1019]
== END lspci -nn ==

== BEGIN lsusb ==
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 003: ID 0480:a006 Toshiba America Info. Systems, Inc.
Bus 001 Device 004: ID 0781:7433 SanDisk Corp. Sansa Clip (msc)
Bus 003 Device 002: ID 413c:3012 Dell Computer Corp. Optical Wheel Mouse
== END lsusb ==

== BEGIN rpm -qa kmod\* kmdl\* ==
== END rpm -qa kmod\* kmdl\* ==

== BEGIN ifconfig -a ==
eth0 Link encap:Ethernet HWaddr 00:0C:F1:7F:0E:23
inet addr:76.104.200.230 Bcast:76.104.203.255 Mask:255.255.252.0
inet6 addr: fe80::20c:f1ff:fe7f:e23/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:19161 errors:0 dropped:0 overruns:0 frame:0
TX packets:4371 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:6349118 (6.0 MiB) TX bytes:545672 (532.8 KiB)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:6 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:340 (340.0 b) TX bytes:340 (340.0 b)

== END ifconfig -a ==

== BEGIN brctl show ==
bridge name bridge id STP enabled interfaces
== END brctl show ==

== BEGIN route -n ==
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
76.104.200.0 0.0.0.0 255.255.252.0 U 1 0 0 eth0
0.0.0.0 76.104.200.1 0.0.0.0 UG 0 0 0 eth0
== END route -n ==

== BEGIN cat /etc/resolv.conf ==
# Generated by NetworkManager
domain hsd1.wa.comcast.net.
search hsd1.wa.comcast.net.
nameserver 75.75.75.75
nameserver 75.75.76.76
== END cat /etc/resolv.conf ==

== BEGIN grep net /etc/nsswitch.conf ==
#networks: nisplus [NOTFOUND=return] files
#netmasks: nisplus [NOTFOUND=return] files
netmasks: files
networks: files
netgroup: nisplus
== END grep net /etc/nsswitch.conf ==

== BEGIN chkconfig --list | grep -Ei 'network|wpa' ==
NetworkManager 0:off 1:off 2:on 3:on 4:on 5:on 6:off
network 0:off 1:off 2:off 3:off 4:off 5:off 6:off
wpa_supplicant 0:off 1:off 2:off 3:off 4:off 5:off 6:off
== END chkconfig --list | grep -Ei 'network|wpa' ==

[/code]

pschaff
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Posts: 18276
Joined: 2006/12/13 20:15:34
Location: Tidewater, Virginia, North America
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CentOS 6.2 audio and video playback are slightly too fast or

Post by pschaff » 2012/01/17 16:45:08

You might want to try the [url=http://elrepo.org/tiki/kmod-alsa]ELRepo kmod-alsa[/url] drivers and/or [url=http://elrepo.org/tiki/xorg-x11-drv-intel]xorg-x11-drv-intel[/url].

I notice you have multiple 3rd part repos installed, but fortunately EPEL is not enabled along with RPMforge. You may want to consider using the [url=http://wiki.centos.org/PackageManagement/Yum/Priorities]yum priorities plugin[/url].

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