From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 15112] New: Radeon KMS on RV250 gets wrong refresh rate.
Date: Sat, 23 Jan 2010 07:57:34 GMT
Message-ID:
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path:
List-Unsubscribe: ,
List-Archive:
List-Post:
List-Help:
List-Subscribe: ,
Errors-To: dri-devel-bounces@lists.sourceforge.net
To: dri-devel@lists.sourceforge.net
List-Id: dri-devel@lists.freedesktop.org
http://bugzilla.kernel.org/show_bug.cgi?id=15112
Summary: Radeon KMS on RV250 gets wrong refresh rate.
Product: Drivers
Version: 2.5
Kernel Version: 2.6.33-rc5
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Video(DRI - non Intel)
AssignedTo: drivers_video-dri@kernel-bugs.osdl.org
ReportedBy: joekowalski@gmail.com
Regression: No
When booting with KMS disabled, the ati UMS xorg driver properly sets the
display mode to 1400x1050@60.2hz. xrandr reports the following modes:
$ DISPLAY=:0 xrandr
Screen 0: minimum 320 x 200, current 1400 x 1050, maximum 1400 x 1400
VGA-0 disconnected (normal left inverted right x axis y axis)
LVDS connected 1400x1050+0+0 (normal left inverted right x axis y axis) 0mm x
0mm
1400x1050 60.2*+
1280x1024 59.9 60.0
1280x960 60.0 59.9
1280x854 59.9
1280x800 59.8
1280x720 59.9
1152x768 59.8
1024x768 60.0 59.9
800x600 60.3 59.9
640x480 59.9 59.4
S-video disconnected (normal left inverted right x axis y axis)
However when booting with KMS enabled, all that appears is a black screen.
After verifying that fbcon is built into the kernel and that KMS is
initializing, I also found that the xserver had started up, but still with a
blank screen. After blindly logging in, I ssh'd into the box, and found the
following xrandr modes:
$ DISPLAY=:0 xrandr
Screen 0: minimum 320 x 200, current 1400 x 1050, maximum 4096 x 4096
VGA-0 disconnected (normal left inverted right x axis y axis)
LVDS connected 1400x1050+0+0 (normal left inverted right x axis y axis) 0mm x
0mm
1400x1050 60.5 + 60.0*
1280x1024 59.9 60.0
1280x960 60.0 59.9
1280x854 59.9
1280x800 59.8
1280x720 59.9
1152x768 59.8
1024x768 60.0 59.9
800x600 60.3 59.9
848x480 59.7
720x480 59.7
640x480 59.9 59.4
S-video disconnected (normal left inverted right x axis y axis)
It appears when using KMS, the correct refresh rate for the 1400x1050
resolution isn't found and instead is a rate that doesn't work with this panel
gets setup, resulting in a blank screen.
--
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.
------------------------------------------------------------------------------
Throughout its 18-year history, RSA Conference consistently attracts the
world's best and brightest in the field, creating opportunities for Conference
attendees to learn about information security's most important issues through
interactions with peers, luminaries and emerging and established companies.
http://p.sf.net/sfu/rsaconf-dev2dev
--