Some information to breathing led:
1. There is a patent on this behaviour (i.e.
http://www.google.com/patents/US6658577), and some may not want to
implement it.
2. It is usually implement by EC by detecting hardware pins. For example,
SLP_S3#, SLP_S4# and perhaps others:
==========================================================
S3 Sleep Control: SLP_S3# is for power plane control.. This signal shuts off
power to all non-critical systems when in S3 (Suspend To RAM), S4 (Suspend to
Disk), or S5 (Soft Off) states.
S4 Sleep Control: SLP_S4# is for power plane control. This signal shuts power
to all non-critical systems when in the S4 (Suspend to Disk) or S5 (Soft Off)
state.
==========================================================
The above pins are not controlled by software at all and they will
change according when the system (ex. chipset) is put to s3 and s4.
The questions we need to ask ODM are 1. whether they implement the
breathing led, 2. whether EC is used to detect pins, 3. what other
software method to control it, if any.
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1219687
Title:
[Dell XPS 13 L322X] LED won't blink during suspend.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1219687/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
