Also a problem for Hewlett-Packard HP ProBook 455 G1/194E with AMD A4-4300M and Radeon HD 7420G using mesa x11 drivers.
Strongly disagree with Low importance. Importance is critical since it forces user to reboot system if there is no network terminal with ssh available. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1283938 Title: [Samsung NP535U4X-S01TH] Ubuntu 14.04 blank screen after wakeup from sleep Status in “linux” package in Ubuntu: Incomplete Bug description: In 14.04 after wakeup from suspend, the notebook screen goes blank while the OS and the hardware is awake (I can also press Ctrl+F1 and Ctrl+Alt+Del to reboot the system). Changeing "quiet splash" to "nomodeset" in /etc/default/grub allows the wakeup, but the pc is really slow (can't be used). WORKAROUND: This problem is not happening with the AMD property drivers. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: xserver-xorg-video-ati 1:7.3.0-1ubuntu2 ProcVersionSignature: Ubuntu 3.13.0-11.31-generic 3.13.3 Uname: Linux 3.13.0-11-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.13.2-0ubuntu5 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Mon Feb 24 12:58:07 2014 DistUpgraded: Fresh install DistroCodename: trusty DistroVariant: ubuntu DkmsStatus: virtualbox, 4.3.6, 3.13.0-11-generic, x86_64: installed GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7500G] [1002:990a] (prog-if 00 [VGA controller]) Subsystem: Samsung Electronics Co Ltd Device [144d:c660] Advanced Micro Devices, Inc. [AMD/ATI] Thames [Radeon HD 7550M/7570M/7650M] [1002:6841] (rev ff) (prog-if ff) InstallationDate: Installed on 2014-02-22 (1 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140218) MachineType: SAMSUNG ELECTRONICS CO., LTD. 535U4C ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-11-generic root=UUID=9f8c7e92-a6ea-41fd-9489-a256c8b9f5d5 ro quiet splash vt.handoff=7 SourcePackage: xserver-xorg-video-ati UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/03/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P06RAF.N93.130403.LEO dmi.board.asset.tag: No Asset Tag dmi.board.name: NP535U4X-S01TH dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: SEC_SW_REVISION_1234567890ABCD dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP06RAF.N93.130403.LEO:bd04/03/2013:svnSAMSUNGELECTRONICSCO.,LTD.:pn535U4C:pvrP06RAF:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP535U4X-S01TH:rvrSEC_SW_REVISION_1234567890ABCD:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A: dmi.product.name: 535U4C dmi.product.version: P06RAF dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. version.compiz: compiz 1:0.9.11+14.04.20140218-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.52-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0~rc1-1ubuntu4 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0~rc1-1ubuntu4 version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu6 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2 xserver.bootTime: Mon Feb 24 12:54:54 2014 xserver.configfile: default xserver.errors: RADEON(G0): [XvMC] Failed to initialize extension. xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.15.0-1ubuntu6 xserver.video_driver: radeon To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1283938/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
