Opened 5 years ago

Closed 5 years ago

Last modified 20 months ago

#11659 closed defect (fixed)

Sentelic touchpad behaving unpredictable

Reported by: erikos Owned by: martin.langhoff
Priority: high Milestone:
Component: distro Version: 1.75-B1
Keywords: Cc: greenfeld, pgf
Blocked By: Blocking:
Deployments affected: Action Needed: no action
Verified: no


Today I have seen the weird trackpad feedback bug again. The cursor does not move as expected when using the trackpad. Here are the testing samples:

  • I have the latest build os28
  • it does npt go away with idle time
  • I am on power battery fully charged, switching on battery does not change it
  • tested with anothe ruser, same behavior
  • "olpc-fsp-regs verify" does succeed, behavior unchanged

Attachments (1)

olpc-fsp-regs (2.2 KB) - added by martin.langhoff 5 years ago.

Download all attachments as: .zip

Change History (12)

comment:1 Changed 5 years ago by erikos

  • Component changed from interface-guidelines to distro
  • Owner changed from Eben to pbrobinson
  • rebooting did bring back normal behavior

comment:2 Changed 5 years ago by martin.langhoff

  • Cc greenfeld added
  • Owner changed from pbrobinson to martin.langhoff
  • Priority changed from normal to high

We need to figure out steps to repro. I am also asking Sentelic whether their driver recalibrates periodically...

comment:3 Changed 5 years ago by martin.langhoff

  • Summary changed from Touchpad behaving unprodictable to Sentelic touchpad behaving unpredictable

The config in os28 is "5F".

comment:4 Changed 5 years ago by martin.langhoff

The Sentelic team has seen the issue as well. They are working on it.

Changed 5 years ago by martin.langhoff

comment:5 Changed 5 years ago by martin.langhoff

I've attached an olpc-fsp-regs script with an updated configuration, based on recomendation from Sentelic. This adds to 5F the following settings:

  0x17 0xaa
  0x48 0xa3
  0x61 0x00

Please test and let us know!

comment:6 Changed 5 years ago by martin.langhoff

  • Cc pgf added

comment:7 Changed 5 years ago by godiard

This config improve a lot the touchpad in my rubber keyboard ramp xo. Continue using it and report if there are any issue.

comment:8 Changed 5 years ago by martin.langhoff

  • Action Needed changed from diagnose to test in build

Test 6F config in os30

comment:9 Changed 5 years ago by greenfeld

Personally I like the configuration in 11.3.1 os30 as used on an XO-1.75.

However I have never had as much of an issue with this problem as compared to other users. So perhaps someone else should close the ticket.

comment:10 Changed 5 years ago by greenfeld

  • Action Needed changed from test in build to no action
  • Resolution set to fixed
  • Status changed from new to closed

Since no one else it commenting on this ticket I presume it can be closed.

comment:11 Changed 20 months ago by Quozl

  • Milestone 1.75-software deleted

Milestone 1.75-software deleted

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