How to control Computer RGB LEDs in Linux [closed] - linux

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Since I switched to a new AMD Ryzen system my computer lit up.
All new hardware components seem nowadays to have such fancy(?) RGB-LEDs built-in (even in memory modules, even the stock CPU-cooler from AMD).
Is there a way to switch all LEDs in my system off.
The BIOS settings don't offer any control over the LEDs.
Only the mainboard's manufacturers utility software (all for Windows) seems to be capable of controlling that lightning in my computer case.
Is there a way to control such LEDs through Linux Operating System?

A bit late, but just saw this so...for what it is worth...
While most PC mainboard and peripheral manufacturers have created their own proprietary schemes for RGB control via Windows software, some EFI settings allow the mainboard control of them to be turned off. Look into your EFI menus to see if you have that option. I have only Asus mainboards, but they have an option for "stealth" which turns them all off. Otherwise you get that saccharine oscillating rainbow color effect. Good luck.

I run an Asus Tuf B450 with AMD and yes it lights up lie christmas
O.O >blink<
When it starts up press F2 to go into BIOS. There is a top note for Asus Aura. On mine pressing F4 or clicking the slider to off kills all the LED on the board...ALL
Mrs J

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U-boot Splashscreen through SPI [closed]

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I am trying to configure a splashscreen in u-boot on an orange pi zero plus using Armbian.
The screen is connected through spi1 using the ST7789v chip of the LCD.
I already have used systemd to display a splashscreen however I find it slow to display something. It display something only after ~12 sec. I could probably reduce that time a bit by loading the service earlier but it would never start in 5 sec.
It seems that u-boot doesn't take in charge spi as a video output. I can see LCD, HDMI, DVI, VGA,... but no SPI. Is it possible to configure the SPI as LCD? Or to send framebuffer to the SPI to display the splashscreen?
As #KamilCuk mentioned there is no ST7789V driver in U-Boot yet. But you could write your own.
In Linux there is a frame buffer driver drivers/staging/fbtft/fb_st7789v.c which could serve as a template.
On the U-Boot side you can use drivers/video/lg4573.c as a template for a SPI framebuffer driver.
Additionally to the driver you will a device tree overlay describing the SPI device. See Documentation/devicetree/bindings/display/panel/sitronix,st7789v.yaml of the Linux kernel.
Please, send your patches upstream.

Make a singular button sleep/wake windows 10 [closed]

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I can't seem to find anything specific for windows 10. I can search for the above title and it searches for everything with the word "Make" in it so it returns generic keyboard on/off settings adjustment.
My question is if there's a way to make a singular keyboard key sleep/wake the computer. No mouse, not the whole keyboard, just 1 button. Is that possible?
To put your computer into sleep mode, you can do windows + X, chord into U and then chord into S.
I don't think it would be possible to assign one specific key to wake your computer though, at least not with the default system settings. I guess the reason for that is that when your PC goes to sleep, it is set to react to any input rather than process the input and filter specific keys, most likely for power usage reason (usually why you put your computer to sleep).
It should be possible to write a program to change that behavior, but I don't think anyone has done it yet (or have published it).
Keys can be remapped using
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout.
There are enough guides for this to go around, plus some tools (e.g. SharpKeys) to automate this entirely.
You can prevent devices from being able to wake up the computer by disabling "allow this device to wake the computer" in Device Manager:
SharpKeys lists E0_63 as Fn/Wake button, but I have not tested how this interacts with above option.
With the above combined, computer would go to sleep at a press of a single (remapped) button and wake up only by pressing the Power button.

Linux mint screen not showing correctly with nvidia gpu [closed]

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I downloaded Linux mint KDE 16 64 bit iso.
but when i boot with it, after 10 sec screen blink continuously i cant even see anything on the desktop except few Linux on Linux mint default wallpaper.
I am getting too much irritated and disappointed from Linux pls help.
I have Amd athlon x2 process with inbuilt nvidia 7025 graphics.
Having 4 GB DDR2 ram of Kingston.
any help pls ?
Nikhil, i can know your pain. lets follow some steps, see if they work.
At your desktop just navigate your mouse on the desktop bottom left corner, keep navigating you will get some content there.
click on start menu launcher
search for system settings.
click on Desktop effect in the second line first option.
Go to Advance
in composting type switch to OPENGL 1.2 (Default was OPENGL 2.0).
click on apply on the bottom left and then everything is fine now you can proceed further.
you should install your graphic driver for permanent solution
System setting >> Driver manager >> click on your nvidia card and then Apply changes.
And one more thing Linux isn't irritating ;)

Linux box with only one application which is fullscreen [closed]

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Sorry for the rather broad question, but I'm just looking for some leads here to get started on this...
Let's say I have a CentOS machine running the X Windows System. I'd like to have the machine only display a single application (let's say Mozilla Firefox) and have that application full screen at all times. Is there a more suitable distro to do this with than CentOS?
I hope I've given enough information here about what I want to do.
Thanks!
I think you are looking for kiosk mode, you can achieve this by various kiosk based linux based iso distribution like http://sanickiosk.wikidot.com/ (Sanickiosk) and WebKiosk
(http://www.binaryemotions.com/).
Even you can customize ubuntu to run only firefox in full screen mode (http://www.instructables.com/id/Setting-Up-Ubuntu-as-a-Kiosk-Web-Appliance/?ALLSTEPS).
Thanks & Regards,
Alok Thaker
I'm really not sure if this is the proper place, but the disto for this type of use hardly matters, its really up to personal preference and how hard you find it to set up. In my limited expirence you can just add the command to launch the app, typically with a geometry option (with firefox you can specify the -width and -height flags), and then that X session will end when the program ends.

Who initialize the flash? [closed]

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I am learning about Linux boot process on ARM processors and find that U-boot is boot from the flash and then u-boot code intialize the RAM to set up the execution environment like stack set up and all
and relocate itself.
Now my question who initialize the flash so that u-boot code can execute?
Also is it any difference booting it from NOR flash or NAND flash?
Is booting from NOR flash is faster than booting from NAND flash?
naturally someone has to program that flash the first time. And each board design determines how that actually happens, sometimes the part is programmed before being soldered down, sometimes there is a backdoor a connector you can program through, etc. Sometimes not. Sometimes the processor or other hardware on the board has some other kind of bootloader that you can use to program that normal boot flash, etc.
NOR or NAND isnt usually much of a difference, my biggest problem with the newer flashes is worrying about read-disturb. Flash reading is faster than writing and a lot of the effort is or at least needs to be in write speed and density and cost, so I would assume that is where the efforts are and not so much read speed vs write speed. If you have a read speed problem, then just copy the bootloader to ram as soon as you can and run from there, stay off the prom after that.

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