Bug 679110 - ViewSonic VA2431wm not detected properly when used as secondary monitor
Summary: ViewSonic VA2431wm not detected properly when used as secondary monitor
Keywords:
Status: CLOSED DUPLICATE of bug 678971
Alias: None
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-ati
Version: 14
Hardware: x86_64
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Jérôme Glisse
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-02-21 16:04 UTC by John Hopkins
Modified: 2018-04-11 06:52 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of: 678971
Environment:
Last Closed: 2011-02-22 17:30:51 UTC
Type: ---


Attachments (Terms of Use)

Description John Hopkins 2011-02-21 16:04:57 UTC
+++ This bug was initially created as a clone of Bug #678971 +++

Description of problem:

On my Fedora 14 workstation, My ViewSonic VA2431wm monitor is detected without issue.  However, when I connect that monitor to my ASUS notebook (via VGA adapter in both cases) and try to use it as a secondary monitor, it is not detected properly and only offers a maximum 1024x768 screen resolution instead of 1920x1080.

Version-Release number of selected component (if applicable):

Fedora 14.
Linux 2.6.35.9-64.fc14.x86_64 #1 SMP Fri Dec 3 12:19:41 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux


How reproducible:

Always.

Steps to Reproduce:
1. Connect VA2431wm monitor to VGA port on a notebook computer.
2. Open display preferences and note the maximum resolution is 1024x768.
3. 
  
Actual results:

Maximum resolution is 1024x768.

Expected results:

Maximum resolution should be 1920x1080.

Additional info:

I ran the following commands as root and was able to get full screen resolution out of the monitor:

# xrandr --newmode "1920x1080_60.00_hsync" 148.50  1920 2008 2052 2200  1080 1084 1089 1125 +hsync +vsync
# xrandr --addmode VGA-0 "1920x1080_60.00_hsync"
# xrandr --output VGA-0 --mode "1920x1080_60.00_hsync"

Note: the modeline setting above was taken from my PC's Xorg log file with the monitor attached.

$ lspci | grep VGA
01:00.0 VGA compatible controller: ATI Technologies Inc Broadway XT [Mobility Radeon HD 5800 Series]

Comment 1 Matěj Cepl 2011-02-22 17:30:51 UTC

*** This bug has been marked as a duplicate of bug 678971 ***


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