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** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Tags added: trusty
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https://bugs.launchpad.net/bugs/1645985
Title:
ubuntu 1404_HWE_EOL kernel breaks Thinkpad T530 keyboard backlight
operation
Status in linux package in Ubuntu:
Incomplete
Bug description:
System: Lenovo Thinkpad T530 laptop
OS: ubuntu 14.04 LTS, kernel 3.19.0-66-generic 64bit
lsb_release -rd
Description: Ubuntu 14.04.5 LTS
Release: 14.04
With the above configuration the keyboard backlights and screen-top
illuminator work as they are supposed to.
In August I received the 1404_HWE_EOL update popup. Image taken today is
attached.
I installed the ubuntu 1404_HWE_EOL which installed (I think) some 4.4 kernel.
After installing, the keyboard backlights and screen-top illuminator
come on without hitting the special keys. When it returns from screen
saver when I hit the return key these lights come on also.
If I reboot to the old kernel all is well. So something is broken in
the kernel that is installed with the 1404_HWE_EOL
So I deleted this new kernel for now.
The popup comes up constantly for almost 4 months now, many many times
per day. This is a huge annoyance.
More seriously is that no other updates are coming in. This poses
security issues at a minimum.
Accepting the update causes the backlights and screen-top illuminator
to go on with every screen saver operation which is just as annoying.
This was reported here without any response to date:
http://askubuntu.com/questions/817383/ubuntu-1404-hwe-eol-kernel-breaks-thinkpad-t530-keyboard-backlight
This was reported here without any response to date:
https://forums.lenovo.com/t5/Linux-Discussion/T530-Keyboard-backlight-comes-on-when-screen-saver-goes-off-once/m-p/3457674#M112494
Lenovo T530 BIOS info:
Package (ID) UEFI BIOS (BIOS ID) ECP (ECP ID) Rev. Issue Date
-------------------- ------------------- --------------- ---- -----------
2.67 (G4UJ31UC) 2.67 (G4ETA7WW) 1.13 (G4HT39WW) 01 2016/09/09
I hope someone can fix this so I can move forward and stop the annoyances to
boot.
regards
oldunixguy
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