Ubuntu
linux package

  1. Bug #1719795
  2. Comment #33

Comment 33 for bug 1719795

Revision history for this message
In , rui.zhang (rui.zhang-linux-kernel-bugs) wrote :

for Linux 4.9.3 normal boot
  7: 4945 1476 1820 275 IR-IO-APIC 7-fasteoi INT3432:00, INT3433:00

for Linux 4.9.3 boot after Linux 4.17.0
 7: 327339 48015 802942 21344 IR-IO-APIC 7-fasteoi INT3432:00, INT3433:00

yes. there is indeed an interrupt storm, and this could increase the power consumption easily.

It is very likely that the I2C bus is not powered off cleanly during reboot.

so, when you say normal boot, you mean a cold boot, say, in 4.17.0 kernel, shutdown the machine, and then power on the machine manually to boot into 4.9.3 kernel, right?

If this is true, we are still able to confirm the good and bad kernel, by do cold boot every time, right?

As this seems to be a driver issue, reassign to I2C experts anyway.