diff options
| author | Josh Triplett <josh@joshtriplett.org> | 2012-04-06 21:42:12 -0700 |
|---|---|---|
| committer | Alan Coopersmith <alan.coopersmith@oracle.com> | 2012-04-06 21:42:12 -0700 |
| commit | bf9fa7fd4826643398b48cb01574d5cd8148ebca (patch) | |
| tree | a0be2536e6e1ffb9278ea3bfacb1ddfcaeda84b0 | |
| parent | 04d5b1bb93aec1c9c1f6e6beddb471a5baf07066 (diff) | |
Update DDC/DPI description to match current Xorg implementation
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
| -rw-r--r-- | general/ReleaseNotes.xml | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/general/ReleaseNotes.xml b/general/ReleaseNotes.xml index c721a4e..9e6724c 100644 --- a/general/ReleaseNotes.xml +++ b/general/ReleaseNotes.xml @@ -752,17 +752,25 @@ The next section describes what is new in the latest version configuration file don't match those that are detected. </para> - <sect4 id='Changed_behavior_caused_by_DDC.'> - <title>Changed behavior caused by DDC.</title> + <sect4 id='Changed_behavior_in_handling_information_from_DDC'> + <title>Changed behavior in handling information from DDC</title> <para> - Several drivers use DDC information to set the screen size and - pitch. This can be overridden by explicitly resetting it to - the and non-DDC default value 75 with the <option>-dpi 75</option> - command line option for the X - server, or by specifying appropriate screen dimensions with the - "DisplaySize" keyword in the "Monitor" section of the config - file. + The X server previously used DDC information to detect screen + size and pitch, and compute DPI automatically, allowing fonts + and other UI elements to automatically scale to appropriate + sizes. This mechanism worked reasonably well for many + single-monitor cases, but did not compute accurate DPI values + for multi-monitor cases or less common single-display setups. + Thus, this autodetection has been removed, and the X server no + longer tries to compute an appropriate DPI value. All users + wanting fonts, physical measurement units, and other UI elements + scaled appropriately for their display (including users for whom + autodetection previously worked) must now set DPI or some other + scaling factor explicitly, either via the X server's + <option>-dpi</option> option, a DPI setting in their graphical + enironment, or an alternate scaling mechanism provided by their + environment. </para> </sect4> </sect3> |