Re: F21 Final RC1 - Xfce screensave not turning off backlight

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On 12/02/2014 04:28 PM, Robert Moskowitz wrote:
> 
> On 12/01/2014 09:31 PM, Mukundan Ragavan wrote:
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> 
> Just tested screen blanking using the Final RC2 Live workstation
> that boots Gnome.  It is set (on battery) to blank the screen at 5
> minutes. It did just that.  The screen is off.  Turn off the light
> in my office and the screen is dark, unlike the Xfce install which
> still has the backlight on.
> 
> I will be installing the RC2 Xfce via the netinst CD tonight or
> tomorrow...
> 
> I noticed in the booting a message from the kernel:
> 
> Dec 02 17:04:12 localhost kernel: thinkpad_acpi: Unsupported
> brightness interface, please contact
> ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx Dec 02 17:04:12 localhost
> kernel: thinkpad_acpi: This ThinkPad has standard ACPI backlight
> brightness control, supported by the ACPI video driver Dec 02
> 17:04:12 localhost kernel: thinkpad_acpi: Disabling thinkpad-acpi 
> brightness events by default... Dec 02 17:08:21 localhost
> gnome-session[1593]: Gjs-Message: JS LOG: The property brightness
> doesn't seem to be a normal object property of [0x303c920 StWidget]
> or a registered special property Dec 02 17:13:00 localhost
> pkexec[2413]: liveuser: Executing command [USER=root] [TTY=unknown]
> [CWD=/home/liveuser] [COMMAND=/usr/libexec/gsd-backlight-helper
> --set-brightness 4] Dec 02 17:19:04 localhost pkexec[2427]:
> liveuser: Executing command [USER=root] [TTY=unknown]
> [CWD=/home/liveuser] [COMMAND=/usr/libexec/gsd-backlight-helper
> --set-brightness 15] Dec 02 17:19:12 localhost gnome-session[1593]:
> Gjs-Message: JS LOG: The property brightness doesn't seem to be a
> normal object property of [0x4929520 StWidget] or a registered
> special property
> 
> Gnome does seem to know how to turn off the screen.  So I decided
> to go back to the Xfce and check the journalctl from yesterday's
> testing:
> 
> Dec 01 23:02:24 lx120e.htt-consult.com kernel: [Firmware Bug]:
> ACPI: No _BQC method, cannot determine initial brightness Dec 01
> 23:02:25 lx120e.htt-consult.com kernel: thinkpad_acpi: Unsupported
> brightness interface, please contact 
> ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx Dec 01 23:02:25
> lx120e.htt-consult.com kernel: thinkpad_acpi: This ThinkPad has
> standard ACPI backlight brightness control, supported by the ACPI
> video driver Dec 01 23:02:25 lx120e.htt-consult.com kernel:
> thinkpad_acpi: Disabling thinkpad-acpi brightness events by
> default... Dec 01 23:03:00 lx120e.htt-consult.com kernel: [Firmware
> Bug]: ACPI: No _BQC method, cannot determine initial brightness Dec
> 01 23:03:01 lx120e.htt-consult.com kernel: thinkpad_acpi: 
> Unsupported brightness interface, please contact 
> ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx Dec 01 23:03:01
> lx120e.htt-consult.com kernel: thinkpad_acpi: This ThinkPad has
> standard ACPI backlight brightness control, supported by the ACPI
> video driver Dec 01 23:03:01 lx120e.htt-consult.com kernel:
> thinkpad_acpi: Disabling thinkpad-acpi brightness events by
> default... Dec 01 23:03:53 lx120e.htt-consult.com kernel: [Firmware
> Bug]: ACPI: No _BQC method, cannot determine initial brightness Dec
> 01 23:03:54 lx120e.htt-consult.com kernel: thinkpad_acpi: 
> Unsupported brightness interface, please contact 
> ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx Dec 01 23:03:54
> lx120e.htt-consult.com kernel: thinkpad_acpi: This ThinkPad has
> standard ACPI backlight brightness control, supported by the ACPI
> video driver Dec 01 23:03:54 lx120e.htt-consult.com kernel:
> thinkpad_acpi: Disabling thinkpad-acpi brightness events by
> default... Dec 01 23:04:09 lx120e.htt-consult.com pkexec[1277]:
> rgm: Executing command [USER=root] [TTY=unknown] [CWD=/] 
> [COMMAND=/usr/sbin/xfpm-power-backlight-helper
> --set-brightness-switch 0] Dec 01 23:23:50 lx120e.htt-consult.com
> pkexec[1553]: rgm: Executing command [USER=root] [TTY=unknown]
> [CWD=/] [COMMAND=/usr/sbin/xfpm-power-backlight-helper
> --set-brightness 15]
> 
> Perhaps this will help.
> 
> 

Thank you.

Can you also try one more thing -

kill xfce4-power-maanger using xfce4-power-manager -q

Then, restart it using

xfce4-power-manager --debug

and see what it says.

If I have no clue, I will at least open an upstream bug.

Thanks!

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