https://bugs.freedesktop.org/show_bug.cgi?id=45291
Bug #: 45291 Summary: No video output via DisplayPort on Mobility HD 4670. Classification: Unclassified Product: DRI Version: unspecified Platform: x86-64 (AMD64) OS/Version: All Status: NEW Severity: normal Priority: medium Component: DRM/Radeon AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: jonimoose@gmail.com
Created attachment 56209 --> https://bugs.freedesktop.org/attachment.cgi?id=56209 dmesg
I have a Dell Studio XPS 1610 laptop and a Dell U2312HM monitor with DisplayPort. The monitor works in the BIOS but as soon as Grub loads and Linux starts to boot it blanks and enters Powersave mode.once in X xrandr reports it as on but there is no picture and the monitors OSD just continues to report that it is in Powersave mode. Enabling and disabling the monitor via Xrandr does not error and my windows manager resizes things as if it was enabled but the monitor still shows no input.
There are no errors in dmesg during this and everything is reported as working.(the warning at the end of dmesg is from a different HDMI monitor which I plugged later since the DisplayPort one wasn't working)
https://bugs.freedesktop.org/show_bug.cgi?id=45291
--- Comment #1 from Jon Sturm jonimoose@gmail.com 2012-01-26 19:29:40 PST --- Created attachment 56210 --> https://bugs.freedesktop.org/attachment.cgi?id=56210 Xorg.0.log
https://bugs.freedesktop.org/show_bug.cgi?id=45291
Alex Deucher agd5f@yahoo.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Attachment #56210|text/x-log |text/plain mime type| | Attachment #56210|0 |1 is patch| |
https://bugs.freedesktop.org/show_bug.cgi?id=45291
--- Comment #2 from Alex Deucher agd5f@yahoo.com 2012-01-27 07:29:50 PST --- Do other modes besides 1920x1080 on the displayport monitor work? E.g., xrandr --output DisplayPort-0 --mode 1024x768 etc.
https://bugs.freedesktop.org/show_bug.cgi?id=45291
--- Comment #3 from Jon Sturm jonimoose@gmail.com 2012-02-05 17:52:13 UTC --- Sorry for the late reply, but no, no other modes worked.
https://bugs.freedesktop.org/show_bug.cgi?id=45291
--- Comment #4 from Glen Ogilvie nelg@linuxsolutions.co.nz --- Also occurs on a Dell Studio 1747 with an Mobility Radoen HD 4650.
Anything I can do to help? No errors in the logs. Monitor is detected, correct resolutions found. I can tell it to extend the desktop it.. but no output on the monitor.. it stays sleeping.
Works OK on the ATI legacy driver.. but I want to upgrade from a 4 year old distro.
https://bugs.freedesktop.org/show_bug.cgi?id=45291
--- Comment #5 from Alex Deucher agd5f@yahoo.com --- *** Bug 82285 has been marked as a duplicate of this bug. ***
https://bugs.freedesktop.org/show_bug.cgi?id=45291
--- Comment #6 from p3we asobierak@gmail.com --- This issue also occurs on Dell U2312MH monitor connected to ATI Mobility Radeon 540v (RV710) over DisplayPort. The driver properly detects plugged monitor and discover all capabilities but there is no signal on DisplayPort. After short time monitor goes to sleep mode.
I have tried all available modes with no success. VGA output works fine.
I have tested this configuration under Windows and DisplayPort works as expected, so it is no a hardware problem.
https://bugs.freedesktop.org/show_bug.cgi?id=45291
Martin Peres martin.peres@free.fr changed:
What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |MOVED Status|NEW |RESOLVED
--- Comment #7 from Martin Peres martin.peres@free.fr --- -- GitLab Migration Automatic Message --
This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.
You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/248.
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