Bug 114928 - green_saver does not switch DVI monitor power off
Summary: green_saver does not switch DVI monitor power off
Status: Open
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: 6.2-RELEASE
Hardware: Any Any
: Normal Affects Only Me
Assignee: freebsd-bugs (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2007-07-26 11:50 UTC by Vsevolod Volkov
Modified: 2018-05-20 23:51 UTC (History)
1 user (show)

See Also:


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Description Vsevolod Volkov 2007-07-26 11:50:01 UTC
green_saver does not switch DVI monitor power off, just blanks a screen.
Backlight stays on. There is no problem when monitor connected via analog
VGA cable.

Additional information:
- VGA: nVidia GeForce 6200 TC or 7600 GS;
- Monitor: ViewSonic VG920 connected via DVI;
- /etc/rc.conf:
saver="green"
allscreens_flags="MODE_282" # 1280x1024

How-To-Repeat: Connect LCD monitor via DVI.
Load green_saver.
Wait for screensaver timeout.
Comment 1 Stefan Thurner 2007-07-30 07:21:10 UTC
Hi,

I can confirm this. My hardware is a GeForce 6600 and an 
EIZO S1910 conected via DVI.

I found out that this monitor uses DMPM instead of DMPS to 
switch the monitor off when using DVI. May be it's still not 
implemented in green_saver.

regards
-Stefan
-- 
Technische Universität Chemnitz
Institut für Fertigungstechnik/Schweißtechnik
Telefon: +49 (0) 371/531 32403
Telefax: +49 (0) 371/531 23729
Comment 2 igor.polovykh 2015-07-29 21:18:46 UTC
root@bvgm.org / ] # uname -a
FreeBSD bvgm.org 9.3-STABLE FreeBSD 9.3-STABLE #53 r284881: Sat Jun 27 06:05:47 MSK 2015     root@bvgm.org:/usr/obj/usr/src/sys/CUSTOM  amd64

The same problem with analog VGA cable too.
Please fix this stupid bug or say where to fix it.

rc.conf
saver="green"
blanktime="60"

CUSTOM
# Bus support.
device          acpi
device          acpi_video
device          pci
Comment 3 Eitan Adler freebsd_committer freebsd_triage 2018-05-20 23:51:15 UTC
For bugs matching the following conditions:
- Status == In Progress
- Assignee == "bugs@FreeBSD.org"
- Last Modified Year <= 2017

Do
- Set Status to "Open"