<![CDATA[Nexus 5 LED control via /sys?]]>I'm not sure if this is a hardware problem with my own Nexus 5 or not. Can somebody with a shell (and root) on a Nexus 5 go to /sys/class/leds/blue and "echo 255 > brightness" and tell me if it makes your LED light up? The LED stays dark for me, although the white camera LED with similar manipulations lights right up.

TIA!

]]>https://forums.ubports.com/topic/341/nexus-5-led-control-via-sysRSS for NodeSat, 11 Apr 2026 08:11:03 GMTFri, 16 Jun 2017 20:35:30 GMT60<![CDATA[Reply to Nexus 5 LED control via /sys? on Sun, 18 Jun 2017 17:23:12 GMT]]>Thanks, but since I was root, the permission issue wasn't it.

Turns out there's some notion of RGB lock in the LED driver for the Nexus 5. To make the LED's do things you have to bracket your changes with writing 0 to rgb_start, then make changes, then when you write 1 to rgb_start you'll see them. I now have a nice blinking red LED, which will be quite handy for visual indication of new notification!

(Asiek777, thanks for verifying that it wasn't a hardware problem on my end.)

]]>https://forums.ubports.com/post/2296https://forums.ubports.com/post/2296Sun, 18 Jun 2017 17:23:12 GMT<![CDATA[Reply to Nexus 5 LED control via /sys? on Sun, 18 Jun 2017 09:21:51 GMT]]>Hi,

no this is a bug, we track it here: https://github.com/ubports/ubports-touch/issues/48

Commit will come with one of the next updates hopefully.

BR

]]>https://forums.ubports.com/post/2283https://forums.ubports.com/post/2283Sun, 18 Jun 2017 09:21:51 GMT<![CDATA[Reply to Nexus 5 LED control via /sys? on Sun, 18 Jun 2017 08:49:40 GMT]]>It works for me on BQ E4.5

Do you have write permission on the disk?

sudo mount /dev/loop0 / -o remount,rw

]]>https://forums.ubports.com/post/2278https://forums.ubports.com/post/2278Sun, 18 Jun 2017 08:49:40 GMT<![CDATA[Reply to Nexus 5 LED control via /sys? on Fri, 16 Jun 2017 22:12:01 GMT]]>It stays dark for me too. Nothing happened

]]>https://forums.ubports.com/post/2239https://forums.ubports.com/post/2239Fri, 16 Jun 2017 22:12:01 GMT