Comment 45 for bug 1293384

Similar problem here. Seeing 50% CPU when running Chromium. Using fglrx, because FOSS drivers gave horrid responsiveness and bad video corruption at login screen and while watching video. However, I am not using 14.04 LTS in a virtual machine. I am using it in a Wubi install, however, until I can buy a new computer next year.

$ sudo dmidecode | head -15

# dmidecode 2.12
SMBIOS 2.6 present.
48 structures occupying 1785 bytes.
Table at 0x0009F400.

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
 Vendor: Dell Inc.
 Version: A06
 Release Date: 12/01/2010
 Address: 0xF0000
 Runtime Size: 64 kB
 ROM Size: 1024 kB
 Characteristics:
  PCI is supported

$ sudo lshw -C cpu

*-cpu
       description: CPU
       product: Pentium(R) Dual-Core CPU E6700 @ 3.20GHz
       vendor: Intel Corp.
       physical id: 4
       bus info: cpu@0
       version: Pentium(R) Dual-Core CPU E6700 @ 3.20GHz
       serial: To Be Filled By O.E.M.
       slot: CPU 1
       size: 3203MHz
       capacity: 3203MHz
       width: 64 bits
       clock: 266MHz
       capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm xsave lahf_lm dtherm tpr_shadow vnmi flexpriority cpufreq
       configuration: cores=2 enabledcores=2 threads=2

$ sudo lshw -C video

*-display
       description: VGA compatible controller
       product: Juniper PRO [Radeon HD 5750]
       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
       physical id: 0
       bus info: pci@0000:01:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
       configuration: driver=fglrx_pci latency=0
       resources: irq:47 memory:d0000000-dfffffff memory:f7ee0000-f7efffff ioport:d000(size=256) memory:f7ec0000-f7edffff

$ /usr/lib/nux/unity_support_test -p
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: AMD Radeon HD 5700 Series
OpenGL version string: 4.3.12798 Compatibility Profile Context 13.35.1005

Not software rendered: yes
Not blacklisted: yes
GLX fbconfig: yes
GLX texture from pixmap: yes
GL npot or rect textures: yes
GL vertex program: yes
GL fragment program: yes
GL vertex buffer object: yes
GL framebuffer object: yes
GL version is 1.4+: yes

Unity 3D supported: yes