[regression] Wrong resolution on external monitor

[OC]

Binary package hint: xorg

This week my laptop stopped detecting the right resolution on an external projector.

Wednesday Nov 3d I was still able to use the full resolution (1280×1024) of the Epson EB-S6 projector. Today the max resolution is 1360×768, which is displayed distorted. The only other resolution available is 1024×768.

Between these two sessions I did not do anything with my computer besides normal browsing and OO.o work. The log of updates is attached.

Ubuntu 10.10 fully updated
HP NX7400
Let me add how grateful I am when this tricky area "just works", which it did with Maverick, and how distressed when 25+ Windows users only see Ubuntu in a crammed, pixelized frame. Thank you for your work.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: xorg 1:7.5+6ubuntu3
ProcVersionSignature: Ubuntu 2.6.35-22.35-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
Architecture: i386
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1680x1050
 edid-base64: AP///////wAyDHkSAAAAAAAPAQKAIRV4CryllVRSjCcjUFQAAAABAQEBAQEBAQEBAQEBAQEBqC+Q4GAaEEAgQBMAS88QAAAZAAAAAAAAAAAAAAAAAAAAAAAAAAAA/gBMR1BoaWxpcHNMQ0QKAAAA/gBMUDE1NFcwMi1CMUs1ALI=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Mon Nov 8 17:45:51 2010
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: Hewlett-Packard HP Compaq nx7400 (RH403ET#UUG)
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=1a48e615-9ca4-4a5b-b8a4-b82093a4c9ee ro quiet splash
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
dmi.bios.date: 07/28/2006
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68YGU Ver. F.07
dmi.board.name: 30A2
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 40.16
dmi.chassis.asset.tag: CNU63618MS
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68YGUVer.F.07:bd07/28/2006:svnHewlett-Packard:pnHPCompaqnx7400(RH403ET#UUG):pvrF.07:rvnHewlett-Packard:rn30A2:rvrKBCVersion40.16:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP Compaq nx7400 (RH403ET#UUG)
dmi.product.version: F.07
dmi.sys.vendor: Hewlett-Packard
glxinfo: Error: [Errno 2] No such file or directory
system:
 distro: Ubuntu
 codename: maverick
 architecture: i686
 kernel: 2.6.35-22-generic

[OC (olivier-c)]

Well, today I cannot reproduce my problem anymore.
I am dealing with a pool of six seemingly identical projectors (all EB-S6 model) but perhaps one of them causes the problem.
Please bear with me while I get my hand on each of the projectors and test them.

[OC (olivier-c)]

After much effort and searching it turns out the video cable, not the projector, was the source for the problem. (Groan).
Windows XP only manages 800×600 with that cable so I don’t think it’s a Ubuntu bug that I can only achieve 1024×768.

All my apologies for the disturbance. Closing as invalid and deleting attachments for privacy reasons.