Since your lspci.txt shows that you have a Radeon Mobility 7500 graphics chipset, this is definitely bug #426582. See that report for some more information and possible workarounds.
I am marking this report as a duplicate. Thanks for reporting!
Since your lspci.txt shows that you have a Radeon Mobility 7500 graphics chipset, this is definitely bug #426582. See that report for some more information and possible workarounds.
I am marking this report as a duplicate. Thanks for reporting!