https://bugzilla.kernel.org/show_bug.cgi?id=42616
Summary: Radeon Kernel Mode Setting sets wrong mode Product: Drivers Version: 2.5 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: thomas.jones@utoronto.ca Regression: No
I have a Radeon HD 3470, connected to a Dell P2010H monitor via Display Port.
The monitor's native resolution is 1600x900, and everything works correctly with UMS, however if I use KMS I cannot use that mode, I can use at least 1024x768, 1280x1024, and 1152x864 with KMS, but no matter how I try I cannot get it to work in 1600x900. I have tried with the CVT timings, (reduced blanking and not) and with the ones provided in the monitor's EDID.
If I attempt to set any of those modes (the 1600x900) with KMS on the monitor claims that I'm using an unsupported mode. UMS works just fine though.
I'm running Fedora, and I don't think this is a regression in the kernel since I don't think this computer has ever worked with KMS.
Right now what I've done is I have set the kernel command line to boot with 1152x864 and KMS, then I tried to use xrandr to change modes and the monitor just complained.
dmesg doesn't seem to have anything useful to say, and neither does Xorg.0.log
https://bugzilla.kernel.org/show_bug.cgi?id=42616
Alex Deucher alexdeucher@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |alexdeucher@gmail.com
--- Comment #1 from Alex Deucher alexdeucher@gmail.com 2012-01-20 19:13:28 --- Please attach your xorg log, 'xrandr --verbose' output, and dmesg output from both KMS and UMS.
https://bugzilla.kernel.org/show_bug.cgi?id=42616
--- Comment #2 from W Thomas Jones thomas.jones@utoronto.ca 2012-01-20 19:45:17 --- Created an attachment (id=72137) --> (https://bugzilla.kernel.org/attachment.cgi?id=72137) UMS Xorg.0.log
https://bugzilla.kernel.org/show_bug.cgi?id=42616
--- Comment #3 from W Thomas Jones thomas.jones@utoronto.ca 2012-01-20 19:47:03 --- Created an attachment (id=72138) --> (https://bugzilla.kernel.org/attachment.cgi?id=72138) xrandr --verbose UMS
the "1600x900Dell" mode is from me explicitly adding a modeline from the EDID data while I was trying to make it work with KMS
https://bugzilla.kernel.org/show_bug.cgi?id=42616
--- Comment #4 from W Thomas Jones thomas.jones@utoronto.ca 2012-01-20 20:11:38 --- Created an attachment (id=72139) --> (https://bugzilla.kernel.org/attachment.cgi?id=72139) dmesg UMS
https://bugzilla.kernel.org/show_bug.cgi?id=42616
--- Comment #5 from W Thomas Jones thomas.jones@utoronto.ca 2012-01-20 20:11:54 --- Created an attachment (id=72140) --> (https://bugzilla.kernel.org/attachment.cgi?id=72140) dmesg KMS
https://bugzilla.kernel.org/show_bug.cgi?id=42616
--- Comment #6 from W Thomas Jones thomas.jones@utoronto.ca 2012-01-20 20:12:08 --- Created an attachment (id=72141) --> (https://bugzilla.kernel.org/attachment.cgi?id=72141) KMS Xorg log
https://bugzilla.kernel.org/show_bug.cgi?id=42616
--- Comment #7 from W Thomas Jones thomas.jones@utoronto.ca 2012-01-20 20:12:25 --- Created an attachment (id=72142) --> (https://bugzilla.kernel.org/attachment.cgi?id=72142) KMS xrandr --verbose
https://bugzilla.kernel.org/show_bug.cgi?id=42616
xerofoify@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |xerofoify@gmail.com
--- Comment #8 from xerofoify@gmail.com --- Please check to see if this bug is fixed with a newer kernel. Cheers Nick
dri-devel@lists.freedesktop.org
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