Comment 31 for bug 494699

I have tried installing a couple of times on sony e-series laptop with radeon mobility hd5650 and am getting segfaults in the driver and defaulting to "low graphics"/vesa

$ lspci -nn | grep Radeon
01:00.0 VGA compatible controller [0300]: ATI Technologies Inc Redwood [Radeon HD 5600 Series] [1002:68c1]
01:00.1 Audio device [0403]: ATI Technologies Inc Redwood HDMI Audio [Radeon HD 5600 Series] [1002:aa60]

complete xorg.0.log file posted here:
http://pastebin.com/vkGTJpr8

key error (I think)
Backtrace:
0: /usr/bin/X (xorg_backtrace+0x28) [0x4a25e8]
1: /usr/bin/X (0x400000+0x6538d) [0x46538d]
2: /lib/libpthread.so.0 (0x7f20ee50a000+0xf920) [0x7f20ee519920]
3: /usr/lib/xorg/extra-modules/modules/drivers/fglrx_drv.so (_ZN24DisplayCapabilityService19QuerySinkCapabilityEP21DisplaySinkCapability+0x2c6) [0x7f20eb4005a6]
4: /usr/lib/xorg/extra-modules/modules/drivers/fglrx_drv.so (_ZN15TopologyManager20detectSinkCapabilityEP22TmDisplayPathInterfaceP17TMDetectionStatus+0xc5) [0x7f20eb3d2e45]
5: /usr/lib/xorg/extra-modules/modules/drivers/fglrx_drv.so (_ZN15TopologyManager12detectTargetEP22TmDisplayPathInterfacebP17TMDetectionStatus+0x30) [0x7f20eb3d2af0]
6: /usr/lib/xorg/extra-modules/modules/drivers/fglrx_drv.so (_ZN15TopologyManager17doTargetDetectionEP22TmDisplayPathInterface15DetectionMethodP17TMDetectionStatus+0x108) [0x7f20eb3d2ab8]
7: /usr/lib/xorg/extra-modules/modules/drivers/fglrx_drv.so (_ZN15TopologyManager28detectTargetWithReportOptionEP22TmDisplayPathInterface15DetectionMethodP20TMConnectivityReport+0x42) [0x7f20eb3d27a2]
8: /usr/lib/xorg/extra-modules/modules/drivers/fglrx_drv.so (_ZN15TopologyManager18DoInitialDetectionEv+0x59) [0x7f20eb3cee29]
9: /usr/lib/xorg/extra-modules/modules/drivers/fglrx_drv.so (_ZN4Dal214EnableInstanceEP14_DAL_INIT_INFO+0x29) [0x7f20eb3a2409]
10: /usr/lib/xorg/extra-modules/modules/drivers/fglrx_drv.so (DALEnableInstance+0x8d) [0x7f20eb2122ad]
11: /usr/lib/xorg/extra-modules/modules/drivers/fglrx_drv.so (swlDalDisplayEnableDAL+0x1bb) [0x7f20eb188b3b]
12: /usr/lib/xorg/extra-modules/modules/drivers/fglrx_drv.so (xilDisplayAdaptorCreate+0x5b) [0x7f20eb18640b]
13: /usr/lib/xorg/extra-modules/modules/drivers/fglrx_drv.so (atiddxDisplayPreInit+0x561) [0x7f20eb176c31]
14: /usr/lib/xorg/extra-modules/modules/drivers/fglrx_drv.so (atiddxPreInit+0x7e4) [0x7f20eb154064]
15: /usr/bin/X (InitOutput+0x552) [0x473682]
16: /usr/bin/X (0x400000+0x25f95) [0x425f95]
17: /lib/libc.so.6 (__libc_start_main+0xfd) [0x7f20ed203c4d]
18: /usr/bin/X (0x400000+0x25ce9) [0x425ce9]
Segmentation fault at address (nil)

Caught signal 11 (Segmentation fault). Server aborting

Please consult the The X.Org Foundation support
  at http://wiki.x.org
 for help.
Please also check the log file at "/var/log/Xorg.0.log" for additional information.

 ddxSigGiveUp: Closing log