[CentOS] Semi-OT: hardware: NVidia proprietary driver, C7.4

[Phil Perry]

On 27/09/17 07:56, Sorin Srbu wrote:
>> -----Original Message-----
>> From: CentOS [mailto:centos-bounces at centos.org] On Behalf Of Phil Perry
>> Sent: den 26 september 2017 21:46
>> To: centos at centos.org
>> Subject: Re: [CentOS] Semi-OT: hardware: NVidia proprietary driver, C7.4
>>
>> On 26/09/17 18:40, m.roth at 5-cent.us wrote:
>>> This is really frustrating. I've got a server with two K20c Tesla cards.
> I
>>> need to use the proprietary drivers to use the CUDA toolkit. Btw, I had
> no
>>> trouble at all with building for CentOS 7.3
>>>
>>> I have what NVidia claims is the correct driver package, a 340 series.
> It
>>> appears to build, but then fails to load. The only error I see is "no
> such
>>> device", which makes no sense to me, esp. since it says nothing whatever
>>> else.
>>>
>>> I've gone through the install log, and there are a bunch of Note:, and
>>> warnings, but the later I think are all about comparing signed and
>>> unsigned integers.
>>>
>>> And lsmod shows no nvidia drivers registered, but the logs claims that
>>> Error: Driver 'nvidia' is already registered, aborting...
>>>
>>> Anyone got any ideas?
>>>
>>>          mark
>>>
>>
>> You don't say which version of the 340 series driver you have tried.
>>
>> There was a bug with recent legacy releases that affected el7.4 kernels.
>> We (elrepo) patched the driver to fix that on rhel7.4 releases. I'm not
>> sure but it _may_ have been fixed in the 340.104 driver released last
>> week - I've not bothered building it as the changelog only mentions
>> "Improved compatibility with recent Linux kernels" which we
>> patched/fixed in our the previous release and other issues which don't
>> affect kmods on RHEL.
>>
>> So it sounds like a known issue which has already been fixed. If you
>> don't want to use our packages, maybe take a look at the patch and try
>> applying it to your build.
> 
> Tested 340.76, 340.102, 340.104 (elrepo and proprietary).
> No luck over here with a GTX260 and the 64b-drivers.
> 
> Will test some more, if still no luck, I'll just reinstall from scratch.
> 


The kmod-nvidia-340xx-340.102-4.el7_4.elrepo.x86_64.rpm driver should 
work for your card on el7.4.

All previous releases in elrepo were for el7.3 (and earlier) and are not 
compatible with the el7.4 series kernel.