Bug 80825

Summary: Output is disabled on VT switch
Product: xorg Reporter: Daniel Glöckner <dg>
Component: Driver/geodeAssignee: X.org Geode Mailing List <xorg-driver-geode>
Status: RESOLVED FIXED QA Contact: X.org Geode Mailing List <xorg-driver-geode>
Severity: normal    
Priority: medium CC: connor.behan
Version: unspecified   
Hardware: x86 (IA32)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
Possible fix none

Description Daniel Glöckner 2014-07-02 18:38:55 UTC 
When using a dumb framebuffer driver like vesafb, a switch from X to another VT produces a black screen. This is because of vg_set_custom_mode disabling the CRT output in DF_DISPLAY_CONFIG and DF_VID_MISC.

Before RandR support was introduced (i.e. before d681a844e), LXLeaveGraphics had a final call to lx_enable_dac_power that reenabled the output.
Comment 1 Martin-Éric Racine 2014-10-20 15:09:54 UTC 
Thanks for reporting this.

Patches are warmly welcome.
Comment 2 Connor Behan 2015-12-01 23:49:49 UTC 
Created attachment 120250 [details] [review]
Possible fix

If there isn't some deep reason why these calls were removed, then they can certainly be added back.
Comment 3 Connor Behan 2015-12-01 23:50:49 UTC 
s/explicity/explicit/ in my commit summary.
Comment 4 Martin-Éric Racine 2015-12-02 09:43:41 UTC 
Thanks for the patch.

Last time I checked, the call had been moved to somewhere else but, for some reason, no longer works as expected.
Comment 5 Martin-Éric Racine 2015-12-02 10:28:54 UTC 
Tested and confirmed to work.
Comment 6 Martin-Éric Racine 2015-12-02 12:21:33 UTC 
Patch merged into the Git repository. Marking as fixed.

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