Ubuntu
xorg package

kernel is improperly detecting the refresh rate of Monitor as 87Hz

Bug #663417 reported by Ahmed Shams on 2010-10-19

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	xorg (Ubuntu)	Invalid	Undecided	Unassigned

Bug Description

The kernel is improperly detecting the refresh rate of my monitor: "Samsung SyncMaster 551v" as 87 Hz while it's max. ratio is 85Hz.
This causes the screen to get a little narrower from all edges, and some very thin lines appear Horizontally,
In fact I fixed this on desktop, but no way to fix it while on gdm.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-22-generic 2.6.35-22.34
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-22.34-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: I82801BAICH2 [Intel 82801BA-ICH2], device 0: Intel ICH [Intel 82801BA-ICH2]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ashams 1311 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'I82801BAICH2'/'Intel 82801BA-ICH2 with ALC101 at irq 17'
   Mixer name : 'Realtek ALC101'
   Components : 'AC97a:414c4730'
   Controls : 24
   Simple ctrls : 17
Card1.Amixer.info:
Card hw:1 'UART'/'MPU-401 UART at 0x330, irq 10'
   Mixer name : ''
   Components : ''
   Controls : 0
   Simple ctrls : 0
Card1.Amixer.values:

Date: Tue Oct 19 19:56:08 2010
HibernationDevice: RESUME=UUID=919cfb04-4bf6-4b69-8e3b-969cb32452b1
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
IwConfig:
lo no wireless extensions.

eth0 no wireless extensions.
Lsusb:
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=12490c76-5e41-4cf6-9220-6b05058d85e7 ro quiet splash
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.38
RfKill:

SourcePackage: linux
dmi.bios.date: 11/11/2002
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: 6.00 PG
dmi.board.name: 8IR533
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.type: 3
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvr6.00PG:bd11/11/2002:svn:pn:pvr:rvnGigabyteTechnologyCo.,Ltd.:rn8IR533:rvr:cvn:ct3:cvr:

Tags:

Revision history for this message

Ahmed Shams (ashams) wrote on 2010-10-19:

AcpiTables.txt Edit (62.2 KiB, text/plain; charset="utf-8")
AlsaDevices.txt Edit (522 bytes, text/plain; charset="utf-8")
ArecordDevices.txt Edit (324 bytes, text/plain; charset="utf-8")
BootDmesg.txt Edit (32.0 KiB, text/plain; charset="utf-8")
Card0.Amixer.values.txt Edit (4.1 KiB, text/plain; charset="utf-8")
Card0.Codecs.codec97.0.ac97.0.0.txt Edit (478 bytes, text/plain; charset="utf-8")
Card0.Codecs.codec97.0.ac97.0.0.regs.txt Edit (767 bytes, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (590 bytes, text/plain; charset="utf-8")
Dependencies.txt Edit (1.8 KiB, text/plain; charset="utf-8")
Lspci.txt Edit (7.3 KiB, text/plain; charset="utf-8")
PciMultimedia.txt Edit (565 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (544 bytes, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (1.1 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (1.9 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (73.6 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (200.5 KiB, text/plain; charset="utf-8")
WifiSyslog.txt Edit (275.2 KiB, text/plain; charset="utf-8")

Brad Figg (brad-figg) on 2011-04-07

Changed in linux (Ubuntu):
status:	New → Confirmed

Revision history for this message

penalvch (penalvch) wrote on 2012-04-08:

Ahmed Shams, thank you for reporting this and helping make Ubuntu better. Maverick reached EOL on April 2012.
Please see this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We were wondering if this is still an issue in a supported release? If so, can you please report the results following https://wiki.ubuntu.com/X/Troubleshooting/Resolution#Problem:__Wrong_resolutions.2C_refresh_rates.2C_or_monitor_specs ? As well, can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command in a supported release from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux <replace-with-bug-number>

Thanks in advance.

affects:	linux (Ubuntu) → xorg (Ubuntu)
Changed in xorg (Ubuntu):
status:	Confirmed → Incomplete

Revision history for this message

Ahmed Shams (ashams) wrote on 2012-04-09:

Thank you Christopher. I thin this bug should be closed now as I've
purged that monitor.
Thanks :)

status invalid

Changed in xorg (Ubuntu):
status:	Incomplete → Invalid

Report a bug

This report contains Public information

Everyone can see this information.

You are

Subscribing...

Edit bug mail

Other bug subscribers

Bug attachments

Add attachment

Remote bug watches

Bug watches keep track of this bug in other bug trackers.

Ubuntuxorg package

kernel is improperly detecting the refresh rate of Monitor as 87Hz

Bug Description

Other bug subscribers

Bug attachments

Remote bug watches

Ubuntu
xorg package