I have been running ~kernel-ppa/mainline/v4.12-rc2 for over 5 days now
with neither screen blinking nor power loss.
I had also tried the vanilla 4.11.2 kernel from kernel.org, which did
have the problem.
It seems like a fix occurred sometime between 4.11.2 and 4.12-rc2.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Tags added: kernel-fixed-upstream
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https://bugs.launchpad.net/bugs/1693544
Title:
power loss with kernels newer than 4.1 in Ubuntu 16.04
Status in linux package in Ubuntu:
Confirmed
Bug description:
I am using Ubuntu 16.04 with KDE Neon User Edition on a Lenovo T510.
The screen blinks periodically. I describe it as a blink because it
seems to switch off and right back on very quickly, as if I had just
blinked by eyes. At seemingly random times, the screen will go black
except for a tiny sliver of orange or yellow along the left edge, then
the machine loses power.
I have searched the logs and it seems that all logging just stops
before the power outage without actually logging anything useful.
This problem began shortly after I migrated from Kubuntu 14.04, so I
installed a 3.13.0 kernel from the Ubuntu 14.04 repository and the
problem went away. I then tried a 4.1.38 kernel from
http://kernel.ubuntu.com/~kernel-ppa/mainline. The 4.1 kernel is also
problem free and the most recent kernel I can run without the power
outages.
However, all of these kernels have the power outage issue:
Name Version Source
------------------------------------ ----------------------------
-----------------
linux-image-generic 4.4.0.78.84 16.04
repository
linux-image-generic-hwe-16.04 4.8.0.52.23 16.04
repository
linux-image-generic-hwe-16.04-edge 4.10.0.21.14 16.04
repository
linux-image-4.11.0-041100rc8-generic 4.11.0-041100rc8.201704232131
kernel.ubuntu.com
These kernels are fine:
Name Version Source
------------------------------------ ----------------------------
-----------------
linux-image-3.13.0-24-generic 3.13.0-24.47 14.04
repository
linux-image-4.1.38-040138-generic 4.1.38-040138.201701181632
kernel.ubuntu.com
So, it seems the problem originated sometime between versions 4.1.38
and 4.4.0.
Here is my lshw information:
H/W path Device Class Description
=======================================================
system 4313CTO
/0 bus 4313CTO
/0/0 memory 128KiB BIOS
/0/6 processor Intel(R) Core(TM) i7 CPU M
620 @ 2.67GHz
/0/6/a memory 32KiB L1 cache
/0/6/b memory 256KiB L2 cache
/0/6/c memory 4MiB L3 cache
/0/2a memory 8GiB System Memory
/0/2a/0 memory 4GiB SODIMM DDR3 Synchronous 1334
MHz (0.7 ns)
/0/2a/1 memory 4GiB SODIMM DDR3 Synchronous 1334
MHz (0.7 ns)
/0/100 bridge Core Processor DRAM Controller
/0/100/2 display Core Processor Integrated
Graphics Controller
/0/100/16 communication 5 Series/3400 Series Chipset HECI
Controller
/0/100/19 enp0s25 network 82577LM Gigabit Network Connection
/0/100/1a bus 5 Series/3400 Series Chipset USB2
Enhanced Host Controller
/0/100/1a/1 usb1 bus EHCI Host Controller
/0/100/1a/1/1 bus Integrated Rate Matching Hub
/0/100/1a/1/1/4 communication Broadcom Bluetooth Device
/0/100/1b multimedia 5 Series/3400 Series Chipset High
Definition Audio
/0/100/1c bridge 5 Series/3400 Series Chipset PCI
Express Root Port 1
/0/100/1c.1 bridge 5 Series/3400 Series Chipset PCI
Express Root Port 2
/0/100/1c.1/0 wlp3s0 network Centrino Ultimate-N 6300
/0/100/1c.3 bridge 5 Series/3400 Series Chipset PCI
Express Root Port 4
/0/100/1c.4 bridge 5 Series/3400 Series Chipset PCI
Express Root Port 5
/0/100/1c.4/0 generic MMC/SD Host Controller
/0/100/1c.4/0.1 generic R5U2xx (R5U230 / R5U231 / R5U241)
[Memory Stick Host Controller]
/0/100/1c.4/0.3 bus R5C832 PCIe IEEE 1394 Controller
/0/100/1d bus 5 Series/3400 Series Chipset USB2
Enhanced Host Controller
/0/100/1d/1 usb2 bus EHCI Host Controller
/0/100/1d/1/1 bus Integrated Rate Matching Hub
/0/100/1e bridge 82801 Mobile PCI Bridge
/0/100/1f bridge QM57 Chipset LPC Interface
Controller
/0/100/1f.2 storage 5 Series/3400 Series Chipset 6
port SATA AHCI Controller
/0/100/1f.3 bus 5 Series/3400 Series Chipset
SMBus Controller
/0/100/1f.6 generic 5 Series/3400 Series Chipset
Thermal Subsystem
/0/101 bridge Core Processor QuickPath
Architecture Generic Non-core Registers
/0/102 bridge Core Processor QuickPath
Architecture System Address Decoder
/0/103 bridge Core Processor QPI Link 0
/0/104 bridge 1st Generation Core i3/5/7
Processor QPI Physical 0
/0/105 bridge 1st Generation Core i3/5/7
Processor Reserved
/0/106 bridge 1st Generation Core i3/5/7
Processor Reserved
/0/1 scsi0 storage
/0/1/0.0.0 /dev/sda disk 500GB HITACHI HTS72505
/0/1/0.0.0/1 /dev/sda1 volume 1906MiB EXT4 volume
/0/1/0.0.0/2 /dev/sda2 volume 463GiB Linux filesystem partition
/0/2 scsi1 storage
/0/2/0.0.0 /dev/cdrom disk DVDRAM GT33N
/1 power 42T4801
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