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Asus N550JV: Brightness Keys and SD Card Reader Not Working

asked 2014-09-13 16:35:01 -0500

torvum gravatar image

updated 2014-09-28 19:21:45 -0500

mether gravatar image

Bought a refurbished ASUS N550JV laptop a few days ago. Managed to install Fedora 20 on it, after a bit of a headache as a result of Window 8 and UEFI. Now that it's all updated and running, I can't seem to get the SD Card reader or the brightness keys working (fn + f5, fn + f6). I've tried following several readily findable guides online, but none of them seem to work. To date, here's what I've tried:

  • In vim I added acpi_osi="" to the end of GRUB_CMDLINE_LINUX= in /etc/default/grub, after which I "compiled it" by executing "sudo grub2-mkconfig -o /boot/grub2/grub.cfg" It looked like this:

GRUB_CMDLINE_LINUX="rd.lvm.lv=fedora/swap nomodeset rd.lvm.lv=fedora/root vconsole.font=latarcyrheb-sun16 $([ -x /usr/sbin/rhcrashkernel-param ] && /usr/sbin/rhcrashkernel-param || :) nouveau.modeset=0 rd.driver.blacklist=nouveau rhgb quiet acpi_osi="""

  • Also tried acpi_osi= in the same place (without the "")

  • Created a file named asus-nb-wmi.conf in /etc/modules-load.d/, the contents of which was simply: asus-nb-wmi

After some searching I haven't found any information regarding getting the SD Card reader working.

I'm not really all that familiar with editing the grub file, and I've only been using Linux for 1 year, meaning that I'm not exactly an advanced user by any stretch of the imagination. Can anyone help me out here?

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for brightness there is command line tool available in fedora called xbacklight. This command can be helpful when function keys are not working.

pnemade gravatar imagepnemade ( 2014-09-14 07:47:41 -0500 )edit

Is there anyway to get xbacklight working together with my function keys? Also, will it display the little HUD overlay that one typically sees when adjusting brightness on a laptop?

torvum gravatar imagetorvum ( 2014-09-14 10:04:07 -0500 )edit

I think there is no integration available. Its purely command line tool.

pnemade gravatar imagepnemade ( 2014-09-14 22:24:37 -0500 )edit

I'm leaving that for the worst-case scenario. I'd really love to just get the screen brightness adjusted via the function keys. It's funny, because other combinations work (Fn + F3, Fn + F4 for instance), just not brightness.

torvum gravatar imagetorvum ( 2014-09-15 08:47:28 -0500 )edit

you can try one more thing. If you know how to modify kernel boot line in grub then add to that line "video.use_native_backlight=1" and boot the system and can check if brightness keys works for you.

pnemade gravatar imagepnemade ( 2014-09-15 09:40:29 -0500 )edit

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answered 2015-03-28 13:44:04 -0500

hi there! i had exactly the same issue with my laptop (ASUS n550JV). The brightness keys and the card reader were not working. So what I did is I uninstalled the Generic PnP Monitor under Monitors in the Device Manager, then I restarted my computer. This will fix the issue with the brightness. (Sorry I have no solution to the card reader problem yet). I hope this might help you.

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Asked: 2014-09-13 16:35:01 -0500

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Last updated: Sep 13 '14