*** This is _NOT_ a Nvidia related problem, I am not using the Nvidia with this Ubuntu setup. ***
I am running Ubuntu 11.04 in a Dell XPS Laptop wich comes both with a Nvidia and an integrated Intel AGP.
I am using an external monitor connected through a mini DisplayPort wired to the Integrated Intel card.
It has been working since I installed Ubuntu 11.04 a month a go, today the external monitor stopped responding:
- The external monitor reports no sync.
- System > Preferences > Monitors reports the external monitor as attached and operational.
- Print Screen includes the image of the external monitor.
- The laptop primary monitor works as expected.
After double checking the cables, connections and the external monitor I booted back in the previous Kernel (I suppose yesterday I got an kernel update, but not really sure) and the external monitor came back to life. I did the test forth an back a couple times and the behavior was consistent wverytime I switched Kernels.
The offending Kernel is 2.6.38-11-generic.
Last known good Kernel is 2.6.38-10-generic.
So far I am sticking to the 2.6.38-10-generic Kernel while using an external monitor attached to my laptop.
Following are my graphics device info:
anibal@collar-de-bolas:~ $ lspci | grep -i VGA
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: nVidia Corporation Device 0df4 (rev a1)
anibal@collar-de-bolas:~ $ sudo lshw -C video
[sudo] password for anibal:
*-display
description: VGA compatible controller
product: nVidia Corporation
vendor: nVidia Corporation
physical id: 0
bus info: pci@0000:01:00.0
version: a1
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
configuration: driver=nouveau latency=0
resources: irq:16 memory:f0000000-f0ffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:3000(size=12 memory:f1000000-f107ffff
*-display
description: VGA compatible controller
product: 2nd Generation Core Processor Family Integrated Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 09
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:54 memory:f1400000-f17fffff memory:e0000000-efffffff ioport:4000(size=64)
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-11-generic 2.6.38-11.48
ProcVersionSignature: Ubuntu 2.6.38-11.48-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC665 Analog [ALC665 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: anibal 3394 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xf1c00000 irq 55'
Mixer name : 'Intel CougarPoint HDMI'
Components : 'HDA:10ec0665,1028050e,00100003 HDA:80862805,80860101,00100000'
Controls : 26
Simple ctrls : 12
Date: Wed Aug 31 10:51:54 2011
HibernationDevice: RESUME=UUID=04c05399-bfb5-4045-a757-786ee21c7d64
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
MachineType: Dell Inc. Dell System XPS L502X
ProcEnviron:
LANGUAGE=en_US:en
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-11-generic root=UUID=b014e346-4401-48e7-bfaf-d697fb02489a ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-2.6.38-11-generic N/A
linux-backports-modules-2.6.38-11-generic N/A
linux-firmware 1.52
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/20/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A06
dmi.board.name: 0NJT03
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnDellInc.:bvrA06:bd07/20/2011:svnDellInc.:pnDellSystemXPSL502X:pvr:rvnDellInc.:rn0NJT03:rvrA00:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: Dell System XPS L502X
dmi.sys.vendor: Dell Inc.
There are only three changes to the i915 driver between those versions. I made a build with all three patches reverted to establish whether or not one of them is responsible. Can you please test the build at the following link and report back whether or not the issue persists? Thanks!
http://