[Dell Inspiron 5447] failed to suspend-resume when using AMD Radeon R7 M260 graphic card [1002:6900]

[Taihsiang Ho]

Dell Inspiron 5447 (CID 201401-14529) on 14.04

Steps to reproduce this bug:
1. install proprietary driver by clicking 'Ubuntu Software Center'-->Software sources--> the tab 'Additional Drivers'
2. select the suggested proprietary drivers fglrx or fglrx-updates
3. reboot the system
4. suspend the system by 'sudo rtcwake -s 60 -m mem' or the indicator in the top right of the desktop
5. press power to resume the system if you suspended the system by the indicator

Expected result:
the system will resume back to work.

Actul result:
When resuming from suspend, the system will resume back to the stage which shows you the desktop screen, and then freeze.
The resume screen looks fine but the system is freezed.

Both of fglrx and fglrx-updates have the same issue.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: fglrx (not installed)
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
NonfreeKernelModules: fglrx
.tmp.unity.support.test.0:

ApportVersion: 2.14.1-0ubuntu3
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 Jun 9 04:15:09 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus:
 fglrx-updates, 13.350.1, 3.13.0-24-generic, x86_64: installed
 fwts-efi-runtime-dkms, 14.03.01, 3.13.0-24-generic, x86_64: installed
GraphicsCard:
 Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 0b) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:0640]
InstallationDate: Installed on 2014-06-04 (5 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: Dell Inc. Inspiron 5447
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=0b1afcfd-68b0-40fa-b708-243e4be4209b ro rootdelay=60 quiet splash initcall_debug vt.handoff=7
SourcePackage: fglrx-installer
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/12/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: X18
dmi.board.name: 0NGDM1
dmi.board.vendor: Dell Inc.
dmi.board.version: X01
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: X18
dmi.modalias: dmi:bvnDellInc.:bvrX18:bd02/12/2014:svnDellInc.:pnInspiron5447:pvrX18:rvnDellInc.:rn0NGDM1:rvrX01:cvnDellInc.:ct8:cvrX18:
dmi.product.name: Inspiron 5447
dmi.product.version: X18
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.11+14.04.20140409-0ubuntu1
version.fglrx-installer: fglrx-installer N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-4ubuntu5
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-4ubuntu5
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
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 Jun 9 02:26:45 2014
xserver.configfile: /etc/X11/xorg.conf
xserver.errors: Screen 1 deleted because of no matching config section.
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.15.1-0ubuntu2
xserver.video_driver: fglrx

[Dynamicwork (dynamicwork)]

This bug looks same with https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1336707

[Chih-Hsyuan Ho (chih)]

A similar issue was reported against AMD/ATI [1002:6900] and a beta fglrx driver was posted there: https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/1332489/comments/3