Public bug reported:
Bug reported with xdiagnose.
# Summary
On installing Ubuntu 13.10 or 14.04 on a NTA3500 nettop with a VGA
monitor HP vs19e (native resolution 1280x1024), a resolution of 1024x768
is obtained.
The bug is not that the correct resolution cannot be obtained at all
(there's a workaround below with xrandr) but about the fact that is is
not automatically selected despite good EDID data available from
monitor.
# Details
Machine has two video output ports: HDMI and DVI.
No monitor is plugged on HDMI.
Monitor used is plugged on DVI with a DVI-to-VGA passive adapter.
The open-source driver is used.
xrandr and graphical tools don't offer more than 1024x768 on this screen.
xrandr output:
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 8192 x 8192
DVI-0 connected 1024x768+0+0 (normal left inverted right x axis y axis) 376mm x
301mm
1280x1024 60.0 + 75.0
1152x864 75.0
1024x768 75.1 70.1 60.0*
832x624 74.6
800x600 72.2 75.0 60.3
640x480 75.0 72.8 60.0
720x400 70.1
HDMI-0 disconnected (normal left inverted right x axis y axis)
VGA-0 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x
0mm
1024x768 60.0*
800x600 60.3 56.2
848x480 60.0
640x480 59.9
# EDID information
sudo get-edid | parse-edid
This is read-edid version 3.0.1. Prepare for some fun.
Attempting to use i2c interface
Looks like no busses have an EDID. Sorry!
Attempting to use the classical VBE interface
Performing real mode VBE call
Interrupt 0x10 ax=0x4f00 bx=0x0 cx=0x0
Function supported
Call successful
VBE version 300
VBE string at 0xc01cc "AMD ATOMBIOS"
VBE/DDC service about to be called
Report DDC capabilities
Performing real mode VBE call
Interrupt 0x10 ax=0x4f15 bx=0x0 cx=0x0
Function supported
Call successful
Monitor and video card combination does not support DDC1 transfers
Monitor and video card combination supports DDC2 transfers
0 seconds per 128 byte EDID block transfer
Screen is not blanked during DDC transfer
Reading next EDID block
VBE/DDC service about to be called
Read EDID
Performing real mode VBE call
Interrupt 0x10 ax=0x4f15 bx=0x1 cx=0x0
Function supported
Call successful
Checksum Correct
Section "Monitor"
Identifier "HP vs19e"
ModelName "HP vs19e"
VendorName "HWP"
# Monitor Manufactured week 23 of 2006
# EDID version 1.3
# Analog Display
DisplaySize 380 300
Gamma 2.20
Option "DPMS" "true"
Horizsync 30-83
VertRefresh 50-76
# Maximum pixel clock is 140MHz
#Not giving standard mode: 1280x1024, 60Hz
Modeline "Mode 0" 108.00 1280 1328 1440 1688 1024 1025 1028 1066
+hsync +vsync
EndSection
Looks like VBE was successful. Have a good day.
# Additional information, comparison
Same monitor was used on various machines, bug only happens on this
machine.
With no change to hardware, when using ATI proprietary driver, 1280x1024
is available by default (no need for a workaround).
# Workaround
A similar problem was reported on
http://askubuntu.com/questions/207716/ubuntu-12-10-resolution-stuck-at-
1024x768-using-open-source-radeon-driver .
The following sequence allows to get a proper resolution with open-
source driver once.
cvt 1280 1024 60
xrandr --newmode "1280x1024_60.00" 109.00 1280 1368 1496 1712 1024 1027 1034
1063 -hsync +vsync
xrandr --addmode VGA-0 1280x1024_60.00
xrandr --output DVI-0 --off --output VGA-0 --mode 1280x1024_60.00
# Offer for help
What can I do to improve Ubuntu so that other users (including me when I
do a clean Ubuntu install in the future) automatically get correct
resolution ?
How to diagnose the reason why the correct resolution as reported by the
monitor is not used by open-source driver ?
Thank you for your attention
lsb_release -rd
Description: Ubuntu 14.04 LTS
Release: 14.04
LC_ALL=C apt-cache policy xorg
xorg:
Installed: 1:7.7+1ubuntu8
Candidate: 1:7.7+1ubuntu8
Version table:
*** 1:7.7+1ubuntu8 0
500 http://fr.archive.ubuntu.com/ubuntu/ trusty/main i386 Packages
100 /var/lib/dpkg/status
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xorg 1:7.7+1ubuntu8
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic i686
NonfreeKernelModules: fglrx
ApportVersion: 2.14.1-0ubuntu2
Architecture: i386
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Sun Apr 13 18:28:41 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
Advanced Micro Devices, Inc. [AMD/ATI] Wrestler [Radeon HD 6310] [1002:9802]
(prog-if 00 [VGA controller])
Subsystem: Foxconn International, Inc. Device [105b:0e29]
InstallationDate: Installed on 2014-04-05 (8 days ago)
InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Daily i386 (20140404)
LightdmGreeterLog:
** (lightdm-gtk-greeter:23601): WARNING **: Failed to load user image: Failed
to open file '/home/gabriel/.face': Aucun fichier ou dossier de ce type
** (lightdm-gtk-greeter:23601): WARNING **: Failed to load user image: Failed
to open file '/home/stephane/.face': Aucun fichier ou dossier de ce type
LightdmGreeterLogOld:
** (lightdm-gtk-greeter:1345): WARNING **: Failed to load user image: Failed
to open file '/home/gabriel/.face': Aucun fichier ou dossier de ce type
(lightdm-gtk-greeter:1345): Gdk-WARNING **: lightdm-gtk-greeter: Fatal IO
error 11 (Ressource temporairement non disponible) on X server :0.
MachineType: FOXCONN NT-A2400&NT-A3500
ProcEnviron:
LANGUAGE=fr_FR
TERM=xterm
PATH=(custom, no user)
LANG=fr_FR.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic
root=UUID=2a0707b6-4188-4c5f-a1e9-4b5bf8451a1f ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/21/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.4
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: NT-A2400&NT-A3500
dmi.board.vendor: FOXCONN
dmi.board.version: FAB 1.1
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 4
dmi.chassis.vendor: FOXCONN
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr4.6.4:bd07/21/2011:svnFOXCONN:pnNT-A2400&NT-A3500:pvrFAB1.1:rvnFOXCONN:rnNT-A2400&NT-A3500:rvrFAB1.1:cvnFOXCONN:ct4:cvrToBeFilledByO.E.M.:
dmi.product.name: NT-A2400&NT-A3500
dmi.product.version: FAB 1.1
dmi.sys.vendor: FOXCONN
version.compiz: compiz N/A
version.fglrx-installer: fglrx-installer N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-4ubuntu4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-4ubuntu4
version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Sun Apr 13 18:26:57 2014
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.15.0-1ubuntu7
xserver.video_driver: radeon
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 trusty ubuntu
--
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1307176
Title:
Resolution limited to 1024x768
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1307176/+subscriptions
_______________________________________________
Mailing list: https://launchpad.net/~ubuntu-x-swat
Post to : ubuntu-x-swat@lists.launchpad.net
Unsubscribe : https://launchpad.net/~ubuntu-x-swat
More help : https://help.launchpad.net/ListHelp
