From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 89420] DELL U2415 monitor detection issue Date: Tue, 30 Jun 2015 17:19:02 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0684809288==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id DF62C6E09B for ; Tue, 30 Jun 2015 10:19:01 -0700 (PDT) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============0684809288== Content-Type: multipart/alternative; boundary="1435684741.EBfc30.9950"; charset="UTF-8" --1435684741.EBfc30.9950 Date: Tue, 30 Jun 2015 17:19:01 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=89420 --- Comment #3 from Michiel Janssens --- Just an update. At the moment I'm running a newer kernel. 4.1.1-040101-generic Behaviour has changed. I don't have to use the extra kernel parameter drm_kms_helper.edid_firmware. Without it the monitor seems to be detected properly. So resolution is as it should be 1920X1200, at boot time, and also when logging in. However the power save issue still remains. - when the system tell the monitors to go to sleep, they both do, but when wakingg the screens, the U2415 offten won't come out of power save mode, the system is very sluggish at that moment. I'm not able to trigger the monitor to come out of standby. Not by calling xrandr in terminal, switching between VT's, or powering down the monitor. After plugging out the displayport of the U2415, the system becomes responsive again. - after a system suspend to ram the same as above happens. With a reboot everything seems normal again, and in the event the U2415 has gone into power save mode during login, switching between VT's will normally get it out off power save. -- You are receiving this mail because: You are the assignee for the bug. --1435684741.EBfc30.9950 Date: Tue, 30 Jun 2015 17:19:01 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 3 on bug 89420 from 
Just an update.
At the moment I'm running a newer kernel.
4.1.1-040101-generic

Behaviour has changed.
I don't have to use the extra kernel parameter drm_kms_helper.edid_firmware.
Without it the monitor seems to be detected properly.
So resolution is as it should be 1920X1200, at boot time, and also when logging
in.

However the power save issue still remains.
- when the system tell the monitors to go to sleep, they both do, but when
wakingg the screens, the U2415 offten won't come out of power save mode, the
system is very sluggish at that moment. I'm not able to trigger the monitor to
come out of standby. Not by calling xrandr in terminal, switching between VT's,
or powering down the monitor. After plugging out the displayport of the U2415,
the system becomes responsive again.


- after a system suspend to ram the same as above happens.

With a reboot everything seems normal again, and in the event the U2415 has
gone into power save mode during login, switching between VT's will normally
get it out off power save.

You are receiving this mail because:
  • You are the assignee for the bug.
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