Bug 91994

Summary: Samsung U28D590D Monitor does not wake up after power saving mode
Product: DRI Reporter: Adam Flott <adam>
Component: DRM/RadeonAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED FIXED QA Contact:
Severity: normal    
Priority: medium    
Version: unspecified   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
system information
none
lscpi -vvv output
none
Xorg.0.log
none
dmesg none

Description Adam Flott 2015-09-13 16:11:30 UTC 
Created attachment 118244 [details]
system information

I've tried a number of desktop environments and window managers and they all behave the same. When the power saving mode is activated, any attempt to wake up the monitor with a keyboard or mouse results in a blank screen, waits a few seconds, and then goes back to power saving mode.

The monitor is: http://www.samsung.com/us/support/owners/product/LU28D590DS/ZA

I have to resort to using another computer to ssh in and running a combo of "xset dpms force on" and "xset dpms force off" until the display comes online.

This issue has been present since I bought the monitor fall 2014 and tried with a number of xorg / gpu / kernel upgrades. However, this issue is not present on Windows 8 / 10.
Comment 1 Adam Flott 2015-09-13 16:11:48 UTC 
Created attachment 118245 [details]
lscpi -vvv output
Comment 2 Adam Flott 2015-09-13 16:12:03 UTC 
Created attachment 118246 [details]
Xorg.0.log
Comment 3 Adam Flott 2015-09-13 16:12:14 UTC 
Created attachment 118247 [details]
dmesg
Comment 4 Adam Flott 2015-11-19 20:33:30 UTC 
This looks to have been fixed from 4.2->4.3 xf86-video-ati 7.5->7.6 and I thank you immensely. My sanity has been restored.
Comment 5 Adam Flott 2015-11-19 20:33:46 UTC 
(In reply to Adam Flott from comment #4)
> This looks to have been fixed from 4.2->4.3 xf86-video-ati 7.5->7.6 and I
> thank you immensely. My sanity has been restored.

That is Linux kernel 4.2->4.3

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