AM335X SDK 7 3.12 Screensaver

Rainer Berns

Hi,

as soon as my application sets the time on my custom board the screen saver blanks the display. Touching the screen or echo '0' > /sys/class/graphics/fb0/blank activate the screen.

(http://processors.wiki.ti.com/index.php/AM335x_LCD_Controller_Driver%27s_Guide#Usage_and_Verification)

Disableing of the screensaver with consoleblank=0 doesn't work:

cat /proc/cmdline
console=ttyO0,115200n8 consoleblank=0 root=ubi0:rootfs rw ubi.mtd=NAND.file-system,2048 rootfstype=ubifs rootwait=1

Any hints ?

Thanks in advance

Rainer

over 10 years ago

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

Hi Rainer,

The link you refer is for SDK 6. The wiki for SDK 7 is http://processors.wiki.ti.com/index.php/Linux_Core_LCD_Controller_User_Guide , however nothing is mentioned about the screensaver there. I will ask somebody from the SW team to check this.

0 Ivan Matrakov over 10 years ago in reply to Biser Gatchev-XID

TI__Expert 4475 points

Hi Rainer,

Blanking can be disabled altogether by appending consoleblank=0 to kernel bootargs. If you don't modify this parameter somewhere in the kernel this has to work. Please see is this parameter consoleblank is 0 in a kernel. See in the drivers/tty/vt/vt.c and include/linux/moduleparam.h initialization value.

BR
Ivan

0 Rainer Berns over 10 years ago in reply to Ivan Matrakov

Prodigy 190 points

Hello Ivan,

thanks for your response. As you can see in my first post I already add it to the bootargs, but it seams to have no influence. I will check the drive and try to modify it.

(By the way: I have problems to login at this forum with Firefox 32.0.3 and stored passwords)

Rainer

0 Rainer Berns over 10 years ago in reply to Rainer Berns

Prodigy 190 points

The Xserver screen saver was "responsable" for the display blanking.

Sorry Rainer

0 durai samy over 10 years ago in reply to Ivan Matrakov

Intellectual 515 points

Hi Ivan,

Thanks! It is working. Now LCD is not Blanking but we want to put the system into sleep mode or screen saver mode if it ideal for minute.

How to put the system into standby or deepsleep mode automatically if system is ideal for minute?

Please help on this!

Thanks

Durai

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AM335X SDK 7 3.12 Screensaver