Ubuntu
linux package

Monitor reports no input detected and goes into sleep mode

Bug #757549 reported by John Johansen on 2011-04-11

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	linux (Ubuntu)	Expired	Medium	Unassigned

Bug Description

Regression from 2.6.35 based Maverick kernels.

Single monitor attached to the machine via dvi (or hdmi via converter).

It will display grub, or console output, but at about the point gdm starts the display goes black, and reports that no input is detected.

This behavior exists in the 2.6.36, 2.6.37 and 2.6.38 upstream kernels as well.

I bisected this problem to
commit b599c0bca1e08a89a7fc4305bc84f4be30ada368
Author: Adam Jackson <<link:url><email address hidden></link:url>>
Date: Fri Jul 16 14:46:31 2010 -0400

drm/i915/hdmi: Set sync polarity based on actual mode

Signed-off-by: Adam Jackson <<link:url><email address hidden></link:url>>
Signed-off-by: Eric Anholt <<link:url><email address hidden></link:url>>

However reverting this commit in later kernels does not result in the display functioning, and I have not traced it any further yet.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-8-generic 2.6.38-8.42
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: gdm 1256 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfe8f8000 irq 46'
   Mixer name : 'Realtek ALC888'
   Components : 'HDA:10ec0888,104382a3,00100001'
   Controls : 27
   Simple ctrls : 14
Date: Mon Apr 11 06:25:25 2011
HibernationDevice: RESUME=UUID=7b649748-05d3-4787-b8f5-e6d70d259bb4
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
MachineType: System manufacturer ASUS NOVA (P20/P22)
ProcEnviron:
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=42a122a3-e749-4b29-96e6-7d97d0c73e0b ro crashkernel=384M-2G:64M,2G-:128M
RelatedPackageVersions:
linux-restricted-modules-2.6.38-8-generic N/A
linux-backports-modules-2.6.38-8-generic N/A
linux-firmware 1.50
SourcePackage: linux
UpgradeStatus: Upgraded to natty on 2010-12-01 (131 days ago)
dmi.bios.date: 04/14/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0501
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P2P5B1-DHS
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0501:bd04/14/2008:svnSystemmanufacturer:pnASUSNOVA(P20/P22):pvrSystemVersion:rvnASUSTeKComputerINC.:rnP2P5B1-DHS:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: ASUS NOVA (P20/P22)
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

Tags:

Revision history for this message

John Johansen (jjohansen) wrote on 2011-04-11:

AcpiTables.txt Edit (102.6 KiB, text/plain; charset="utf-8")
AlsaDevices.txt Edit (587 bytes, text/plain; charset="utf-8")
AplayDevices.txt Edit (273 bytes, text/plain; charset="utf-8")
ArecordDevices.txt Edit (386 bytes, text/plain; charset="utf-8")
BootDmesg.txt Edit (53.7 KiB, text/plain; charset="utf-8")
Card0.Amixer.values.txt Edit (2.8 KiB, text/plain; charset="utf-8")
Card0.Codecs.codec.0.txt Edit (12.7 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (969 bytes, text/plain; charset="utf-8")
Dependencies.txt Edit (1.9 KiB, text/plain; charset="utf-8")
IwConfig.txt Edit (315 bytes, text/plain; charset="utf-8")
Lspci.txt Edit (23.8 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (780 bytes, text/plain; charset="utf-8")
PciMultimedia.txt Edit (2.3 KiB, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (1.4 KiB, text/plain; charset="utf-8")
ProcCpuinfo_.txt Edit (1.4 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (1.5 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (2.8 KiB, text/plain; charset="utf-8")
RfKill.txt Edit (112 bytes, text/plain; charset="utf-8")
UdevDb.txt Edit (114.8 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (264.6 KiB, text/plain; charset="utf-8")
WifiSyslog.txt Edit (193.9 KiB, text/plain; charset="utf-8")

Brad Figg (brad-figg) on 2011-05-04

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

Revision history for this message

penalvch (penalvch) wrote on 2012-10-17:

John Johansen, thank you for reporting this and helping make Ubuntu better. Natty reached EOL on October 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, could you please test for this 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 please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

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

Also, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the kernel in the daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested and remove the tag:
needs-upstream-testing

This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the text:
needs-upstream-testing

If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER