Ubuntu
pm-utils package

  1. Bug #1528735
  2. Comment #14

Comment 14 for bug 1528735

Revision history for this message
Brad (bbaker6212) wrote :

Further kernel testing on my Lenovo G50-45 with Linux Mint 17.2 Cinnamon, reveals:

PASS - 3.16.0-38-generic #52~14.04.1-Ubuntu
PASS - 3.16.0-77-generic #99~14.04.1-Ubuntu
FAIL - 3.17.0-031700rc4-generic #201409071935 *diff symptom - lockup, fast cpu fan on first resume.
FAIL - 3.17.0-031700rc6-generic #201409211935
FAIL - 3.17.0-031700-generic #201410060605
FAIL - 3.17.4-031704-generic #201411211317

* It also fails on later LM 17.3 (kernel 3.19) and LM 18 kernels 4.4 and 4.7

NOTE that my Lenovo G50 BIOS release A2CN38WW(V2.06) was July 2015
and the other above mentioned Lenovo S435 BIOS release BBCN16WW(V1.07) was June 2015
His PASS on Ubuntu mate 15.10 w/kernel 4.2.0 was due to older BIOS BBCN16WW(V1.03).

Hypothesis is still strong that this is due to a BIOS change in mid 2015 to fix VU#976132.
Kernel versions released after mid 2015 need to be patched. This is likely true for MANY different computer vendors which use common BIOS suppliers' code.