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2nd gen i7 mobile doesn't have Intel HW_RNG?
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K-Bo
n00b
n00b


Joined: 03 Feb 2012
Posts: 13
PostPosted: Fri Apr 13, 2012 9:52 pm    Post subject: 2nd gen i7 mobile doesn't have Intel HW_RNG? Reply with quote
I was under the impression that all I7's and up had a hardware random number generator on chip. But when I try to modprobe intel_rng I get
Code:
FATAL: Error inserting intel_rng (/lib/module/3.2.12-gentoo/kernel/drivers/char/hw_random/intel-rng.ko): No such device

To be more specific I have an Intel i7-2630QM on a C200 chipset was I mistaken int thinking that this hardware is equipped with a hw_rng or is something else wrong?
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Hu
Administrator
Administrator


Joined: 06 Mar 2007
Posts: 23088
PostPosted: Fri Apr 13, 2012 10:25 pm    Post subject: Reply with quote
Is anything written to dmesg when this fails?
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EatMeerkats
Apprentice
Apprentice


Joined: 15 Mar 2006
Posts: 234
PostPosted: Fri Apr 13, 2012 10:36 pm    Post subject: Reply with quote
No, it's only found on i8xx-based motherboards: http://cateee.net/lkddb/web-lkddb/HW_RANDOM_INTEL.html
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s4e8
Guru
Guru


Joined: 29 Jul 2006
Posts: 311
PostPosted: Sat Apr 14, 2012 2:20 am    Post subject: Reply with quote
EatMeerkats wrote:
No, it's only found on i8xx-based motherboards: http://cateee.net/lkddb/web-lkddb/HW_RANDOM_INTEL.html

Another RNG tech for core i7 is the RDRAND instruction, it's available to Ivy bridge or later.
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