Ticket #2061 (closed enhancement: fixed)

Opened 11 years ago

Last modified 2 years ago

LCM (jbt6k74) doesn't go to sleep/deep_standby modes

Reported by: laforge Owned by: laforge@…
Priority: normal Milestone:
Component: kernel Version:
Severity: minor Keywords:
Cc: Blocked By:
Blocking: Estimated Completion (week):
HasPatchForReview: PatchReviewResult:
Reproducible: always


The LCM itself supports three power modes, and the jbt6k74 driver exports the switch between the power modes to userspace.

However, there seems to be no userspace power management to actually take care of doing this.

Therefore, one suggested solution is to register with the framebuffer notifier and switch the LCM off whenever the backlight is switched off.


linux-2.6.24-jbt6k74-fbnotifier.patch (3.5 KB) - added by laforge 11 years ago.
patch that was submitted to openmoko-kernel

Change History

comment:1 Changed 11 years ago by laforge

  • Severity changed from blocker to minor

Changed 11 years ago by laforge

patch that was submitted to openmoko-kernel

comment:2 Changed 11 years ago by laforge

  • Status changed from new to closed
  • Resolution set to fixed

merged by andy into all kernel branches

comment:3 Changed 2 years ago by Chassmetly

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