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Re: [tor-talk] hardware acceleration OK or not?



Joe Btfsplk:
> 
> On 6/28/2014 4:54 AM, Roger Dingledine wrote:
>> On Fri, Jun 27, 2014 at 01:27:50PM -0500, Joe Btfsplk wrote:
>>> Hardware acceleration is unchecked by default it Torbrowser.
>>>
>>> Other than some machines might not support it, is there a reason not
>>> to enabled it?
>>>
>>> Some fingerprinting or other issue?
>> https://trac.torproject.org/projects/tor/ticket/10531
>> which points to
>> https://lists.torproject.org/pipermail/tor-talk/2013-June/thread.html#28620
>>
>>
>> Basically, some Windows systems were crashing when Tor Browser had
>> hardware acceleration enabled.
>>
>> I think we made that change in TBB 3.5rc1:
>> https://blog.torproject.org/blog/tor-browser-bundle-35rc1-released
>>
>> See the (alas not labelled with a ticket number) line:
>> "Misc Prefs: Disable layer acceleration to avoid crashes on Windows"
>>
>> It looks from the various tickets like the issue is not entirely sorted
>> for all users.
>>
> Thanks.  Has it been determined whether hardware acceleration being
> enabled can be detected for fingerprinting purposes?

I think it can if you write some tests measuring and comparing the
performance of particular browser features that may benefit from
hardware acceleration being enabled.

Georg

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