Thank you for looking into logs! > 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?
Yes. > If this is true, we are still able to confirm the good and bad kernel, by do > cold boot every time, right? So, if I cold boot some build for example 10-20 times, and interrupt storm happened at least once, then I should mark it as bad? Does it count if I reboot (instead of cold boot) same build again and again, and then got interrupt storm after many attempts? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1719795 Title: Dell 7140 avarage power consumption in idle increased by 1.3-1.5 times due to events by INT3432 Status in Linux: Incomplete Status in linux package in Ubuntu: New Bug description: On Dell Venue 11 Pro 7140 average power consumption in idle increased by 1.3-1.5 times due to events coming from INT343A. According to powertop since Linux 4.10 INT3432:00 generate around two hundred events on average, in /sys/devices/pci0000:00/INT3432:00/i2c-6 there is two devices: INT343A and SMO91D0. AFAIK INT343A is rt286. With Linux 4.9.0-4.9.45, Linux 4.11.0-4.11.12 in idle there is around 100 wakeups per second in sum, battery discharge rate around 3-3.5 Watts per second. But with Linux 4.9.46-4.9.51, Linux 4.10.0-4.10.17, Linux 4.12.0rc1-4.13.3 - around 300 wakeups per second on average, due to events coming from INT3432:00. With Linux 4.13.3 battery discharge rate around 4.5 Watts per second. Probably some commit was backported to Linux 4.9 between .45 and .46 releases. I have no idea why issue is not reproducible on any Linux 4.11 release I tried. Sometimes INT3432 events rate fall from two hundred to one hundred for shorts period of time (for example I observe this right now on Linux 4.10.0 while removing/installing packages). Message like this sometimes appear in dmesg: [ 731.226730] i2c_hid i2c-SMO91D0:00: i2c_hid_get_input: incomplete report (53/13568) Complete dmesg with Linux 4.13.3 is attached. To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1719795/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
