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SolidHal / PrawnOS

Libre Mainline Kernel and Debian for arm laptops
https://www.PrawnOS.com
GNU General Public License v2.0
114 stars 29 forks source link

i2c errors when using the touchpad #39

Open SolidHal opened 6 years ago

SolidHal commented 6 years ago

When using the touchpad, this gets printed in dmesg once an a while:

elan_i2c 4-0015: invalid report id data (ff)

One of the untested patches seems to fix this issue, further testing required. This doesn't seem to effect functionality of the touchpad.

SolidHal commented 5 years ago

Try disabling i2c 4 in the device tree files?

SolidHal commented 5 years ago

with any of the I2C debug config settings, the invalid reports stop occuring. This suggests to me a timing issue, maybe a race condition?

These are the usual debug messages with just CONFIG_I2C_DEBUG_CORE=y enabeld

[   35.029021] i2c i2c-0: master_xfer[0] W, addr=0x1b, len=2