Christopher,
Vivid with fglrx: none off the reported issues exist. U2415 is detected every
time, display resolution is right, also dpms powersaving works as expected. In
ATI control Center all hardware is detected. Also no xrandr issues
Trusty with fglrx: same as with vivid, none of the issues.
Hi Christopher,
The issues still exist, so still unknown display in All Settings -
Displays, wrong resolution (highest 1024x786) on U2415, power saving
issue on U2415. The issues seem exactly the same as on trusty.
I was not able to use the daily live iso, for xdiagnose extra debugging option
Michiel Janssens, this bug was reported a while ago and there hasn't
been any activity in it recently. We were wondering if this is still an
issue? If so, could you please test for this with the latest development
release of Ubuntu? ISO images are available from
apport information
** Tags added: apport-collected reproducible vivid
** Description changed:
My Laptop HP Elitebook 8740w has two external screens connected.
1 DELL U2412M connected to vga connector
1 DELL U2415 connected to Displayport.
I worked for about a year with a single
Michiel Janssens, does fglrx provide a WORKAROUND to this issue?
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https://bugs.launchpad.net/bugs/1412730
Title:
DELL U2415 monitor detection issues
To manage notifications about
Connecting via HDMI rather than displayport has completely solved the
waking issue for me (so far, at least). The monitor consistently wakes
from sleep in the same configuration that I was using before suspending.
Monitor settings are still not persistent across reboots, but this seems
to be a
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xorg (Ubuntu)
Status: New = Confirmed
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https://bugs.launchpad.net/bugs/1412730
Title:
Just wanted to add that I am experiencing a similar issue with the 2415
not waking after suspend. I don't seem to be having the some problems
with screen resolution, monitor detection, or weirdness with xrandr
commands. If I can get the monitor working, xrandr works correctly every
time.
I neglected to mention that my monitor is also connected via
displayport. I am going to order an HDMI cable to see if that fixes it,
will post back here again either way.
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However the power save issues are still there.
Attached the edid file.
** Attachment added: U2415.edid
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1412730/+attachment/4319036/+files/U2415.edid
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Attached Xorg.0.log with correct detection of all connected monitors.
Also the use of the kernel parameter is visible.
** Attachment added: Xorg.0.log
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1412730/+attachment/4319039/+files/Xorg.0.log
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Investigated the issue some more.
Seems that EDID is not always given by the monitor when asked by the OS, for
instance via Detect Monitors via gui or via xrandr via command line.
The workaround with xorg.conf I have abandoned. It wasnt working great too.
Still a lot of time X was detecting
** Summary changed:
- DELL U2415M monitor detection issues
+ DELL U2415 monitor detection issues
** Description changed:
My Laptop HP Elitebook 8740w has two external screens connected.
1 DELL U2412M connected to vga connector
- 1 DELL U2415M connected to Displayport.
+ 1 DELL U2415
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