Linux On My Samsung

Do your RV520 have also the Nvidia-Card? My Nvidia will turn down the backlight, but not turn up again. Try this and please report wat happend. Actually xubuntu 12.10 is running on my RV520 with latest updates.

Backlight decreases only 2 step and stops. With "acpi_backlight=vendor" added everything becomes terrible: i can decrease brighness but can't increase it at all.


I can confirm this to my RV520. The same issue. As workaround you can plug off the AC power and plug in again, then the brightness ...

Samsung RV520

Backlight automaticly chances from max brightness at ac power to less brightness in battery power and back. Before that update it had remain in less brightness, also after waking up from standby.

But again no brightness control manually with nvidia card :(

root@phaedra:/etc ...

Backlight won't work.

kiesel wrote: i just wanna use it with AC connected,

just an additional information: My E252 runs with battery 1,5hrs only , but the RV520 4 hrs (Both with wlan/wifi) So I can recommend the RV520 also for battery power using.

Hi Kiesel,

thanks for reminiding for this topic. I have bought this RV520 since 3 months. Ubuntu 11.04 is running with that well, but the backlight will be stay unsatisfactory. Maybe, I'm not a "professional" - the backlight won't be adjustable. So with AC power the backlight will be stay at 100 ...

Here are the state of my Samsung RV520 (Natty, Xubuntu64)

Nvidia GeForce GT 520M with "recommended" nvidia driver.

Backlight do nothing, also no screen notes, that the Fn-Keys are working. :(

If I boot regular with AC-Power, backlight is 100%, but after resume from standby, the backlight is ...

This is strange.
Well, use this command to manually add the GPG key for the repository:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv 1E5F36F0 then update the packages index:
sudo apt-get update

This command might be a little bi different, but its works well! :)

Thank you a lot ...

That I had read, but in synaptic I get warnings, that the 32bit repo is "unauthorized".

I add a question to that topic for the NC10:

In Lucid I can change only the fan behaivor silent, normal, fast. In Karmic I can change the cpu throttle between powersaving, on demand and performance. This was more useful for me than fanspeed. In battery mode only the powersaving mode is available ...

What I do wrong? :( (32bit for NC10)


captain@orion:~$ sudo apt-get install --reinstall --allow-unauthenticated voria-ppa-keyring
Paketlisten werden gelesen... Fertig
Abhängigkeitsbaum wird aufgebaut
Status-Informationen einlesen... Fertig
E: Paket voria-ppa-keyring konnte nicht gefunden werden ...

For your information:

~$ lspci -nn
00:00.0 Host bridge [0600]: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub [8086:2a40] (rev 07)
00:01.0 PCI bridge [0604]: Intel Corporation Mobile 4 Series Chipset PCI Express Graphics Port [8086:2a41] (rev 07)
00:1a.0 USB Controller [0c03 ...

@CaptnDifool:
I've added support for the E252 in the udev packages for Lucid.
As soon as you have a chance to test it, please report back and let me know if it works. ;)

May be will better, if I ry complete new install of lucid.? ::)



Yes it will be better!! Now I have done a clean new install ...

@CaptnDifool:
I've added support for the E252 in the udev packages for Lucid.
As soon as you have a chance to test it, please report back and let me know if it works. ;)

Thx, but the FN-Keys doesn't work. I had upgraded (not new installed) lucid, if I do by commandline "samsung-tools -b toggle ...

I had edited the file '/lib/udev/rules.d/95-keymap.rules' and added |*E252*| for my E252 Notebook, rebooted with your latest kernel (and all other relevant updates from your repo) an follwing happened:

The backlight turns with FN + screendown down but with screenup not up anymore. The soundsettings ...