Bug 99678 - [All drivers] Avoid sending unnecessary DVI/HDMI/DisplayPort commands when switching between X11 and Linux console
Summary: [All drivers] Avoid sending unnecessary DVI/HDMI/DisplayPort commands when sw...
Status: RESOLVED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: General (show other bugs)
Version: unspecified
Hardware: Other Linux (All)
: medium normal
Assignee: Default DRI bug account
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Reported: 2017-02-04 15:51 UTC by Jan Ziak (http://atom-symbol.net)
Modified: 2018-02-23 15:15 UTC (History)
0 users

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Description Jan Ziak (http://atom-symbol.net) 2017-02-04 15:51:39 UTC 
Pressing Alt+Ctrl+F1 switches from X11 desktop to Linux console.

Pressing Alt+Ctrl+F7 switches from Linux console back to X11/Xorg desktop.

With driver "amdgpu" in /etc/X11/xorg.conf (x11-drivers/xf86-video-amdgpu-1.2.0), my BenQ HDMI display is buzzing (making noise) for about 1 second after pressing Alt+Ctrl+F1. Switching back to Xorg desktop by pressing Alt+Ctrl+F7 executes immediately without any unnecessary buzzing.
Comment 1 Jan Ziak (http://atom-symbol.net) 2018-02-23 15:15:54 UTC 
Fixed (on R9 390 at least).

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