Gentoo Forums
Gentoo Forums
Gentoo Forums
Quick Search: in
Screen Blanking on/off
View unanswered posts
View posts from last 24 hours

 
Reply to topic    Gentoo Forums Forum Index Kernel & Hardware
View previous topic :: View next topic  
Author Message
cowboy0629
Tux's lil' helper
Tux's lil' helper


Joined: 11 May 2016
Posts: 87
Location: Kawartha Lakes, Ontario

PostPosted: Mon Feb 13, 2017 6:46 pm    Post subject: Screen Blanking on/off Reply with quote

Sorry all hope I have this in the right place. Im having a issue with my laptop where when the screen blanks after so long of inactivity it seems that the backlight is turning on and off every 10 seconds +/- ... I never had (or noticed this before) more noticeable in the dark but also in daylight if sun is not shining on screen.. the backlight seems to be turning on and off every few seconds i have read allot on sccreen flicker but this is only happening when the system blanks the screen in console mode or x ...

My system info

Code:


Linux acer 4.9.6-gentoo-r1 #2 SMP Mon Feb 13 12:28:24 EST 2017 x86_64 Intel(R) Pentium(R) CPU N3700 @ 1.60GHz GenuineIntel GNU/Linux
ACER Aspire ES 15  (ES1-531-P9QU)
Intel Pentium Quad Core Processor N3700 (up to 2.4 Ghz)
Intel HD Graphics 8 gig RAM



RED dmesg errors

Code:

[    0.261608] ACPI Error: No handler for Region [RAM_] (ffff8802774b49d8) [EmbeddedControl] (20160831/evregion-166)
[    0.262010] ACPI Error: Region EmbeddedControl (ID=3) has no handler (20160831/exfldio-299)
[    0.262408] ACPI Error: Method parse/execution failed [\_SB.PCI0.LPCB.EC0._REG] (Node ffff8802774b53e8), AE_NOT_EXIST (20160831/psparse-543)
[    0.263040] ACPI Error: No handler for Region [RAM_] (ffff8802774b49d8) [EmbeddedControl] (20160831/evregion-166)
[    0.263441] ACPI Error: Region EmbeddedControl (ID=3) has no handler (20160831/exfldio-299)
[    0.263833] ACPI Error: Method parse/execution failed [\_SB.PCI0.LPCB.EC0._REG] (Node ffff8802774b53e8), AE_NOT_EXIST (20160831/psparse-543)

[    5.042025] EXT4-fs (sda4): couldn't mount as ext3 due to feature incompatibilities



WHITE dmesg errors

Code:


[    0.025678] ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
[    0.025868] ENERGY_PERF_BIAS: View and update with x86_energy_perf_policy(8)

[    1.198521] usb: port power management may be unreliable

[    4.574349] r8169 0000:01:00.0: can't disable ASPM; OS doesn't have ASPM control

[    8.302562] uvcvideo 1-3:1.0: Entity type for entity Extension 4 was not initialized!
[    8.302567] uvcvideo 1-3:1.0: Entity type for entity Extension 7 was not initialized!
[    8.302570] uvcvideo 1-3:1.0: Entity type for entity Processing 2 was not initialized!
[    8.302572] uvcvideo 1-3:1.0: Entity type for entity Camera 1 was not initialized!

[    8.353913] acer_wmi: Enabling Launch Manager failed: 0xe4 - 0x0



even though this is unrelated to the question if anyone knows how to get any of these errors out of the dmesg please chime in I know people say don't worry but the red really bugs me and I never had these errors last time I had gentoo on this system... I tried Arch.. for a while and found I really liked Gentoo Community way better .. People here are willing to help where the arch people basically tell you are on your own..


Thanks in advance
Mike Dennison
Back to top
View user's profile Send private message
Roman_Gruber
Advocate
Advocate


Joined: 03 Oct 2006
Posts: 3806
Location: Austro Bavaria

PostPosted: Thu Feb 16, 2017 10:49 pm    Post subject: Reply with quote

is there a hardware light sensor for the screen?
Your "bios" is updated?
disable "Active-State Power Management" in your kernel, please. E.g. by passing pcie_aspm=off to the kernel

Are those hotkeys working?

http://www.spinics.net/lists/linux-input/msg12809.html

Looks like another "UEFI" related workaround ...
Back to top
View user's profile Send private message
The Doctor
Moderator
Moderator


Joined: 27 Jul 2010
Posts: 2574

PostPosted: Fri Feb 17, 2017 1:45 am    Post subject: Reply with quote

The Xorg screen blanking can be disabled with an xorg config file. The console is handled separately. I believe Roman_Gruber posted the solution for console only. Unless I am mistaken his solution will not affect X.

The xorg file should be /etc/X11/xorg.conf.d/40-monitor.conf and should contain
Code:
section "ServerFlags"
Option "blank time" "0"
Option "standby time" "0"
Option "suspend time" "0"
Option "off time" "0"
Option "dpms" "false"
EndSection
This will stop the screen and backlight from being turned off in an xorg session.
_________________
First things first, but not necessarily in that order.

Apologies if I take a while to respond. I'm currently working on the dematerialization circuit for my blue box.
Back to top
View user's profile Send private message
cowboy0629
Tux's lil' helper
Tux's lil' helper


Joined: 11 May 2016
Posts: 87
Location: Kawartha Lakes, Ontario

PostPosted: Fri Feb 24, 2017 7:38 pm    Post subject: Reply with quote

Roman_Gruber wrote:
is there a hardware light sensor for the screen?
Your "bios" is updated?
disable "Active-State Power Management" in your kernel, please. E.g. by passing pcie_aspm=off to the kernel

Are those hotkeys working?

http://www.spinics.net/lists/linux-input/msg12809.html

Looks like another "UEFI" related workaround ...


Hi sorry been working far from home so not much time to play with my computers...

I not using UEFI im using the legacy bios settings
BIOS is updated to most recent
Some of the Hotkeys work and Some don't
Oh and if I turn the touch pad off with the hot key I can't turn it back on until I reboot go into BIOS change the touchpad to advanced save exit gointo BIOS and change it back to basic.. for some reason gentoo won't see it at all in advanced mode

How do I pass pcie_aspm=off this to the kernel

thanks
Mike
Back to top
View user's profile Send private message
beizhuchun
n00b
n00b


Joined: 11 Apr 2013
Posts: 28

PostPosted: Sat Feb 25, 2017 4:13 am    Post subject: Reply with quote

you can try to set kernel config as :
CONFIG_X86_SYSFB=n
Back to top
View user's profile Send private message
The Doctor
Moderator
Moderator


Joined: 27 Jul 2010
Posts: 2574

PostPosted: Sat Feb 25, 2017 4:16 am    Post subject: Reply with quote

You can look that up by checking how to pass boot parameters using your bootloader of choice.
_________________
First things first, but not necessarily in that order.

Apologies if I take a while to respond. I'm currently working on the dematerialization circuit for my blue box.
Back to top
View user's profile Send private message
Roman_Gruber
Advocate
Advocate


Joined: 03 Oct 2006
Posts: 3806
Location: Austro Bavaria

PostPosted: Fri Mar 10, 2017 12:57 pm    Post subject: Reply with quote

Quote:
Some of the Hotkeys work and Some don't


you should check those kernel hidden settings for ACPI / notebooks. even those special hidden sections

also check for hints what dmesg says. if it may works with a livecd

It is for sure related

Assuming no hardware defect!
Back to top
View user's profile Send private message
kajzer
Guru
Guru


Joined: 27 Nov 2014
Posts: 434

PostPosted: Sat Mar 11, 2017 2:47 am    Post subject: Reply with quote

You need to run this command :

Code:
xset -dpms s off


Preferably have it auto-execute each time you login, various ways to do that so you choose :)
Back to top
View user's profile Send private message
Display posts from previous:   
Reply to topic    Gentoo Forums Forum Index Kernel & Hardware All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum