Incorrect autodetection of appropriate DPI
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xorg-server (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
Binary package hint: xorg
I have a 32" Samsung TV connected to a Viglen MPC-L via VGA. When the system boots with the VGA cable attached, X starts with a DPI of 29x39. If X starts without a VGA cable attached, it starts with a DPI of 96x96.
X is obviously doing some autodetection to calculate an appropriate DPI for a high resolution screen. However the size of text onscreen (in GDM, in the main WM UI and most applications) is too small to read comfortably, even close up to the screen.
96 DPI seems comfortable and allows the screen to be used from a reasonable distance.
ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 8.10
Package: xorg 1:7.4~5ubuntu3
ProcEnviron:
PATH=/
LANG=en_GB.UTF-8
SHELL=/bin/bash
ProcVersion: Linux version 2.6.27-14-generic (buildd@palmer) (gcc version 4.3.2 (Ubuntu 4.3.2-1ubuntu12) ) #1 SMP Wed Apr 15 18:59:16 UTC 2009
SourcePackage: xorg
Uname: Linux 2.6.27-14-generic i586
xkbcomp:
Changed in xorg (Ubuntu): | |
status: | New → Confirmed |
affects: | xorg (Ubuntu) → xorg-server (Ubuntu) |
tags: | added: intrepid |
Several things are confusing in this report. You mention that it comes up with a 29x39 dpi, however none of your log files show that dpi. Second, your xorg.conf appears to be hardcoding the DisplaySize... why? Third, your xdpyinfo.txt file shows 1280x1024 pixels (361x203 millimeters), which is 90x128 dots per inch, and that does not look incorrect.
One other question, are you using GNOME or KDE? On Jaunty's GNOME it should already be forcing it to a fixed dpi, which gets around a lot of the issues.
Beyond this, I've written up a guide on how to debug font size issues due to incorrect dpi. Please review this and update this bug with the relevant information: /wiki.ubuntu. com/X/Troublesh ooting/ HugeFonts
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