ubuntu-x-swat team mailing list archive

[Andreas Gölzer <K_2005@xxxxxxxxxx>]

Public bug reported:

Binary package hint: xorg

I'm using a two-monitor setup with an ati graphics card (Mobility Radeon HD 4300) on my laptop(lenovo u450p).
The Laptop screen has a hardware resolution of 1366x768, the external monitor a hardware resolution of 1920x1080. 

If I set up the second monitor using

xrandr --output HDMI-0 --off
xrandr --output LVDS --auto
xrandr --output HDMI-0 --auto --right-of LVDS

(or the kde gui, the effects are equal)
I expect

1) the left 1366x768 area to be on the laptop screen, and 
2) the right 1920x768 area to be on the big monitor. 

But I observe:
1) happens as expected
2) happens almost. instead, the 2 rightmost pixels on the laptop monitor are repeated on the left border of the big monitor(filled with black to the bottom), in turn the two rightmost columns of the virtual display area are not visible on any monitor at all.

If I switch the laptop monitor resolution to 1280x720, this effect does not occur, and - except for the then blurred laptop screen - everything works as expected.
A screenshot shows the whole virtual desktop correctly.

Ubuntu version: 10.10 (maverick)
graphics card:
01:00.0 VGA compatible controller: ATI Technologies Inc M92 LP [Mobility Radeon HD 4300 Series]
xorg version: 1:7.5+6ubuntu3
I'm using the 'radeon' display driver, as detected by default. fglrx is not installed.
using kde 4.5.3

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 x86_64
Architecture: amd64
DRM.card0.HDMI_Type_A.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1920x1080 1920x1080 1600x1200 1680x1050 1400x1050 1280x1024 1280x1024 1440x900 1280x960 1152x864 1280x720 1024x768 1024x768 1024x768 832x624 800x600 800x600 800x600 800x600 720x480 640x480 640x480 640x480 640x480 720x400
 edid-base64: AP///////wAEafokAQEBARAUAQOANB14Lu7VpVVImyYSUFS/74DRwLMAqUCVAJBAgYCBQHFPAjqAGHE4LUBYLEUACSUhAAAeAAAA/wBBNExNSVowNzIyMDcKAAAA/QAySx5TEwAKICAgICAgAAAA/ABBU1VTIFZIMjQyCiAgAW0CAyXxUpAFBAMCBwYPDh8UHh0TEhEWASMJfweDAQAAZQMMABAAAjqAGHE4LUBYLEUACSUhAAAeAR2AGHEcFiBYLCUACSUhAACeAR0AclHQHiBuKFUACSUhAAAeAjqA0HI4LUAQLEWACSUhAAAejArQiiDgLRAQPpYACSUhAAAYVw==
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1366x768 1366x768 1280x720 1152x768 1024x768 800x600 848x480 720x480 640x480
 edid-base64: AP///////wAGrzwiAAAAAAATAQOAHxF4Cpf1m1lUjCUiUFQAAAABAQEBAQEBAQEBAQEBAQEBEhtWRlAAIzAmFjYANa0QAAAYDBJWRlAAIzAmFjYANa0QAAAYAAAA/gBBVU8KICAgICAgICAgAAAA/gBCMTQwWFcwMiBWMiAKAMk=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
Date: Tue Nov 23 20:11:52 2010
InstallationMedia: Kubuntu 10.10 "Maverick Meerkat" - Release Candidate amd64 (20100928.3)
MachineType: LENOVO 3389
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=7965020f-a640-4958-8bea-09eb9aaa31a3 ro
ProcEnviron:
 LANGUAGE=
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: xorg
dmi.bios.date: 01/20/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 22CN35WW(V2.02)
dmi.board.name: NITU1
dmi.board.vendor: LENOVO
dmi.board.version: REFERENCE
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnLENOVO:bvr22CN35WW(V2.02):bd01/20/2010:svnLENOVO:pn3389:pvrLenovoIdeaPadU450p:rvnLENOVO:rnNITU1:rvrREFERENCE:cvnNoEnclosure:ct10:cvrN/A:
dmi.product.name: 3389
dmi.product.version: Lenovo IdeaPad U450p
dmi.sys.vendor: LENOVO
peripherals:
 
system:
 distro:             Ubuntu
 codename:           maverick
 architecture:       x86_64
 kernel:             2.6.35-22-generic

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug maverick

-- 
Position of second monitor wrong in dual monitor setup if first monitor is 1366x768
https://bugs.launchpad.net/bugs/680614
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