[Bug 12784] New: radeon driver misdetects lvds dpi resulting in huge font size

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=12784

           Summary: radeon driver misdetects lvds dpi resulting in huge font
                    size
           Product: xorg
           Version: git
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: regression
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: chithanh at cs.tu-berlin.de
         QAContact: xorg-team at lists.x.org


Using an Acer Aspire 5022, Mobility Radeon X700 with LVDS panel and xserver
1.3.0.0

Since upgrading from xf86-video-ati-6.7.192 to current git head, the fonts have
become very large. This is because the screen size is not detected correctly.
Log can be found in attachment 11987.

git bisect points to this checkin:

http://gitweb.freedesktop.org/?p=xorg/driver/xf86-video-ati.git;a=commit;h=fad9e7b00de051f632000eb2304ac23a524f7c8e
---
fad9e7b00de051f632000eb2304ac23a524f7c8e is first bad commit
commit fad9e7b00de051f632000eb2304ac23a524f7c8e
Author: Alex Deucher <alex at t41p.hsd1.va.comcast.net>
Date:   Sun Sep 23 23:43:26 2007 -0400

    RADEON: Rework LVDS mode validation

    The old validation code wasn't really well suited to randr.
    This fixes several issues:
    - missing display size for panels with edid
    - broken duplicate modes
---

The symptoms are the same as in bug 10304. As that is also an Acer notebook,
(using the intel driver instead of radeon) the cause may be related.


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