I've done the 4.8 upgrade, and sorted out the missing apps and changed settings, apart from one thing - the monitor turns Off - fully off, power, not dimming - after about 10-mins without user input.
I have checked every setting in KDE CC - no screensaver or other monitor power setting is enabled. I can't locate a power setting / timer, etc, in System CC.
After a Search here, I found the noblank.sh script - got it from Synaptic - it is pathed, reading, and saying 'Enabled' in KDE CC, but doesn't fix the problem.
An internet search brought up the DPMS problems many distros are having in 4.8. I've tried the xset / dpms in a terminal -
.......................
[david@localhost ~]$ xset dpms
[david@localhost ~]$ xset q
Keyboard Control:
auto repeat: on key click percent: 0 LED mask: 00000000
XKB indicators:
00: Caps Lock: off 01: Num Lock: off 02: Scroll Lock: off
03: Compose: off 04: Kana: off 05: Sleep: off
06: Suspend: off 07: Mute: off 08: Misc: off
09: Mail: off 10: Charging: off 11: Shift Lock: off
12: Group 2: off 13: Mouse Keys: off
auto repeat delay: 250 repeat rate: 30
auto repeating keys: 00ffffffdffffbbf
fadfffefffedffff
dfffffffffffffff
fff7ffffffffffff
bell percent: 50 bell pitch: 400 bell duration: 100
Pointer Control:
acceleration: 1/10 threshold: 4
Screen Saver:
prefer blanking: yes allow exposures: yes
timeout: 0 cycle: 600
Colors:
default colormap: 0x20 BlackPixel: 0x0 WhitePixel: 0xffffff
Font Path:
catalogue:/etc/X11/fontpath.d,built-ins
DPMS (Energy Star):
Standby: 600 Suspend: 600 Off: 600
DPMS is Enabled
Monitor is On
Font cache:
Server does not have the FontCache Extension
[david@localhost ~]$ xset -dpms
[david@localhost ~]$ xset q
Keyboard Control:
auto repeat: on key click percent: 0 LED mask: 00000000
XKB indicators:
00: Caps Lock: off 01: Num Lock: off 02: Scroll Lock: off
03: Compose: off 04: Kana: off 05: Sleep: off
06: Suspend: off 07: Mute: off 08: Misc: off
09: Mail: off 10: Charging: off 11: Shift Lock: off
12: Group 2: off 13: Mouse Keys: off
auto repeat delay: 250 repeat rate: 30
auto repeating keys: 00ffffffdffffbbf
fadfffefffedffff
dfffffffffffffff
fff7ffffffffffff
bell percent: 50 bell pitch: 400 bell duration: 100
Pointer Control:
acceleration: 1/10 threshold: 4
Screen Saver:
prefer blanking: yes allow exposures: yes
timeout: 0 cycle: 600
Colors:
default colormap: 0x20 BlackPixel: 0x0 WhitePixel: 0xffffff
Font Path:
catalogue:/etc/X11/fontpath.d,built-ins
DPMS (Energy Star):
Standby: 600 Suspend: 600 Off: 600
DPMS is Disabled
Font cache:
Server does not have the FontCache Extension
[david@localhost ~]$
......................................
That appears to indicate that DPMS is Off - but while it temporarily stops the monitor off at 10-mins - it reverts after about 40-45 minutes. (This happens whether the terminal change is done as User or Root.)
On checking with - xset q - the third line from end has changed back to "DPMS is Enabled".
In a comment from that Distro which must remain nameless here - somebody described another 4.8 DPMS function with a 40-minute delay... Can that be reverting the 'Disabled' setting - or, not relevant to it...?
In another place - a command with DPMS "Force Off" / "Force On" is mentioned - but, appears to be related to Startups and Shutdowns.
It seems that the unwanted Monitor Off problem affects some installs / hardware, and not others.
Mainboard - Gigabyte GA-MA770
CPU - AMD Phenom II X6 1055T
HDD - Seagate Technology 1000524AS (1TB)
RAM - 8GB DDR3
I don't even know whether I'm on the right track with hunting-down this hassle - but for the moment I've run out of things to try next... So some help would indeed be greatly appreciated....
Regards, Dave.