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[Bug 1531218] [NEW] Laptop Display flickers like 50Hz CRT monitor

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Public bug reported:

Starting with kernel version 4.1, the display of may laptop started to
flicker like an old-fashioned 50Hz CRT monitor.

My computer is an ASUS Zenbook UX303LA-R0280H (Intel i5-4210, HD 4400,
1366x768) running Kubuntu 15.10.

I installed multiple mainline kernels. The problem is not present with
3.19 and 4.0, but occurs with 4.1 and is still present with 4.2, 4.3 and
4.4. (A kernel git-bisect did not work.)

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: linux-image-4.2.0-22-generic 4.2.0-22.27
ProcVersionSignature: Ubuntu 4.2.0-22.27-generic 4.2.6
Uname: Linux 4.2.0-22-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  gallmei    2179 F.... pulseaudio
 /dev/snd/controlC1:  gallmei    2179 F.... pulseaudio
Date: Tue Jan  5 18:07:40 2016
InstallationDate: Installed on 2015-02-13 (325 days ago)
InstallationMedia: Kubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 002: ID 064e:9700 Suyin Corp. Asus Integrated Webcam
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: ASUSTeK COMPUTER INC. UX303LA
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
 LC_NUMERIC=C
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-22-generic.efi.signed root=UUID=b3101f2d-7797-4f15-a1ee-eec2c6d92822 ro quiet splash acpi_osi= vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-4.2.0-22-generic N/A
 linux-backports-modules-4.2.0-22-generic  N/A
 linux-firmware                            1.149.3
SourcePackage: linux
UpgradeStatus: Upgraded to wily on 2015-10-31 (65 days ago)
dmi.bios.date: 09/01/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX303LA.204
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX303LA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX303LA.204:bd09/01/2014:svnASUSTeKCOMPUTERINC.:pnUX303LA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX303LA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: UX303LA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug wily

-- 
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https://bugs.launchpad.net/bugs/1531218

Title:
  Laptop Display flickers like 50Hz CRT monitor

Status in linux package in Ubuntu:
  New

Bug description:
  Starting with kernel version 4.1, the display of may laptop started to
  flicker like an old-fashioned 50Hz CRT monitor.

  My computer is an ASUS Zenbook UX303LA-R0280H (Intel i5-4210, HD 4400,
  1366x768) running Kubuntu 15.10.

  I installed multiple mainline kernels. The problem is not present with
  3.19 and 4.0, but occurs with 4.1 and is still present with 4.2, 4.3
  and 4.4. (A kernel git-bisect did not work.)

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-22-generic 4.2.0-22.27
  ProcVersionSignature: Ubuntu 4.2.0-22.27-generic 4.2.6
  Uname: Linux 4.2.0-22-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  gallmei    2179 F.... pulseaudio
   /dev/snd/controlC1:  gallmei    2179 F.... pulseaudio
  Date: Tue Jan  5 18:07:40 2016
  InstallationDate: Installed on 2015-02-13 (325 days ago)
  InstallationMedia: Kubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 002: ID 064e:9700 Suyin Corp. Asus Integrated Webcam
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: ASUSTeK COMPUTER INC. UX303LA
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
   LC_NUMERIC=C
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-22-generic.efi.signed root=UUID=b3101f2d-7797-4f15-a1ee-eec2c6d92822 ro quiet splash acpi_osi= vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-22-generic N/A
   linux-backports-modules-4.2.0-22-generic  N/A
   linux-firmware                            1.149.3
  SourcePackage: linux
  UpgradeStatus: Upgraded to wily on 2015-10-31 (65 days ago)
  dmi.bios.date: 09/01/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: UX303LA.204
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: UX303LA
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX303LA.204:bd09/01/2014:svnASUSTeKCOMPUTERINC.:pnUX303LA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX303LA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: UX303LA
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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