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[Aaron Sosnick <longlegged.guy@xxxxxxxxx>]

I also have an Acer Aspire 5100. I just installed Ubuntu 14.04 and I
have this exact problem. The machine boots fine, but after a suspend the
screen tears/flickers so badly that the machine is unusable. Note that
the problem does not occur with hibernate.

** Changed in: linux (Ubuntu)
       Status: Invalid => Confirmed

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https://bugs.launchpad.net/bugs/894308

Title:
  1002:5975 [Acer Aspire 5100] suspend/resume failure

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  - Suspending is successful. Resuming results in random flashing artifacts on screen.
  GUI is working ok if you manage to see through the artifacts but it is very hard so I just restart.

  - Happens every time. Tried nomodeset in kernel line of grub but no
  go.

  - Running Ubuntu 11.10 64-bit updated.
  - Don't know which package is responsible, sorry...

  $ cat /proc/version_signature
  Ubuntu 3.0.0-12.20-generic 3.0.4

  $ sudo lspci -vnvn  > lspci-vnvn.log
  (see attachment)
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 1.23-0ubuntu4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  despina    1526 F.... pulseaudio
                        despina    2355 F.... TeamViewer.exe
   /dev/snd/pcmC0D0p:   despina    1526 F...m pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'SB'/'HDA ATI SB at 0xb0000000 irq 16'
     Mixer name	: 'Realtek ALC883'
     Components	: 'HDA:10ec0883,1025009f,00100002 HDA:14f12bfa,1025009f,00090000'
     Controls      : 23
     Simple ctrls  : 13
  DistroRelease: Ubuntu 11.10
  HibernationDevice: RESUME=UUID=ecf7ad46-cd33-46d7-96f5-aa756f41f453
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  Lsusb:
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 001 Device 002: ID 5986:0100 Acer, Inc Orbicam
   Bus 001 Device 004: ID 12d1:1035 Huawei Technologies Co., Ltd.
  MachineType: Acer Aspire 5100
  Package: linux (not installed)
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=59c5075a-4da4-4334-ad5f-9baca27ec73f ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  RelatedPackageVersions:
   linux-restricted-modules-3.0.0-12-generic N/A
   linux-backports-modules-3.0.0-12-generic  N/A
   linux-firmware                            1.60
  Tags:  oneiric running-unity
  Uname: Linux 3.0.0-12-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dialout lpadmin plugdev sambashare
  dmi.bios.date: 01/23/2007
  dmi.bios.vendor: Acer
  dmi.bios.version: V2.73
  dmi.board.name: Navarro
  dmi.board.vendor: Acer
  dmi.board.version: N/A
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnAcer:bvrV2.73:bd01/23/2007:svnAcer:pnAspire5100:pvrV2.73:rvnAcer:rnNavarro:rvrN/A:cvnAcer:ct10:cvrN/A:
  dmi.product.name: Aspire 5100
  dmi.product.version: V2.73
  dmi.sys.vendor: Acer

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