Red Hat Bugzilla – Bug 499022
Aspect ratio settings not respected by xrandr on intel video
Last modified: 2010-06-28 08:22:05 EDT
Description of problem:
The intel Xorg driver supports, or is supposed to support, different methods of preserving or not preserving the aspect ratio of a given display resolution on a given physical display. For example, one could display a 4:3 800x600 resolution on a 16:10 1280x800 display, with black rectangles on the sides of the display.
This has worked in the past "out of the box" for the Intel driver. The default now seems to be to stretch the resolution to whatever the aspect ration is of the physical display.
This is on an install from F11preview DVD, with all updates as of May 4. No xorg.conf, KMS is enabled. Everything is left as it was from the fresh installation.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Use the Gnome Display applet to change the screen resolution to use a resolution with a different aspect ratio than that of the physical screen.
2. See how the image is stretched too wide/too tall.
3. Does not work with xrandr on the command line either (see below).
Stretched display without maintaining the aspect ratio
Stretched display with an appropriate aspect ratio
The only points of comparison I have readily available at this time are Ubuntu 8.10 and 9.04. They both preserve the aspect ratio as expected, and as indicated should happen by "man intel".
Using xrandr from the command line gives the following error:
$ xrandr --output LVDS1 --set PANEL_FITTING full_aspect
X Error of failed request: BadName (named color or font does not exist)
Major opcode of failed request: 148 (RANDR)
Minor opcode of failed request: 11 ()
Serial number of failed request: 27
Current serial number in output stream: 27
Thanks for the bug report. We have reviewed the information you have provided above, and there is some additional information we require that will be helpful in our diagnosis of this issue.
Please attach your X server config file (/etc/X11/xorg.conf, if available) and X server log file (/var/log/Xorg.*.log) to the bug report as individual uncompressed file attachments using the bugzilla file attachment link below.
We will review this issue again once you've had a chance to attach this information.
Thanks in advance.
This bug appears to have been reported against 'rawhide' during the Fedora 11 development cycle.
Changing version to '11'.
More information and reason for this action is here:
After speaking with the driver developers in #intel-gfx on freednode, it turns out that 2.7.0 does not support the driver aspect ratio options under KMS/UXA. As I understand it, support has been introduced in the development tree of the 2.8.x driver.
Is there a git-build of the 2.8 Intel Xorg driver tree available for Fedora 11? If so I would be happy to test with that and report back.
Since this bugzilla report was filed, there have been several major updates in various components of the Xorg system, which may have resolved this issue. Users who have experienced this problem are encouraged to upgrade their system to the latest version of their packages. For packages from updates-testing repository you can use command
yum upgrade --enablerepo='*-updates-testing'
Alternatively, you can also try to test whether this bug is reproducible with the upcoming Fedora 12 distribution by downloading LiveMedia of F12 Beta available at http://alt.fedoraproject.org/pub/alt/nightly-composes/ . By using that you get all the latest packages without need to install anything on your computer. For more information on using LiveMedia take a look at https://fedoraproject.org/wiki/FedoraLiveCD .
Please, if you experience this problem on the up-to-date system, let us now in the comment for this bug, or whether the upgraded system works for you.
If you won't be able to reply in one month, I will have to close this bug as INSUFFICIENT_DATA. Thank you.
[This is a bulk message for all open Fedora Rawhide Xorg-related bugs. I'm adding myself to the CC list for each bug, so I'll see any comments you make after this and do my best to make sure every issue gets proper attention.]
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