[RndTbl] recommendations for 4k video card under Linux

Gilles Detillieux grdetil at scrc.umanitoba.ca
Fri Apr 6 14:09:19 CDT 2018

Well, there is a surprising amount of cards that don't support 4k, 
especially the lower cost ones.

The issue with drivers is that the "built-in" X.org drivers that come in 
their open source packages have good support for older cards, but not 
always for the newer cards (which the 4k-capable ones will tend to be). 
The X.org "nouveau" driver claims to support GeForce GTX 200 and 400, 
but doesn't mention the GTX 1050 chipset in the card you suggested.

Using Nvidia's own Linux drivers has usually involved downloading and 
installing kernel version-specific pre-compiled binary modules, which 
stop loading after a kernel update.

So, yes, due diligence because of trouble in the past.

I've just read up on elrepo.org, though, which seems to package up 
"kABI-tracking kmod drivers" which don't need to be recompiled for each 
kernel update, and their repo includes nvidia drivers. So, that may be 
something to look into. Trouble is some of the stuff that turned up in 
my Google searches involved people struggling to get those elrepo 
drivers working, so it still won't be quite as simple and 
straightforward as it would be if I could get a 4k card that works with 
the default X.org radeon or nouveau drivers.

So, advice from someone who has gotten 4k video working under X.org, 
with or without the elrepo drivers, would be appreciated.

On 04/06/2018 01:27 PM, Kevin McGregor wrote:
> Forgive my ignorance, but don't all current cards support 4K? And the 
> NVidia drivers would support that under Linux (<- assumption). For 
> example, this card ($220 at ME) claims to support four 4K monitors 
> (DP, HDMI, DVI-D):
> https://www.memoryexpress.com/Products/MX64640
> Have you had trouble in the past, or is this just due diligence?
> On Fri, Apr 6, 2018 at 12:52 PM, Gilles Detillieux 
> <grdetil at scrc.umanitoba.ca <mailto:grdetil at scrc.umanitoba.ca>> wrote:
>     Hi. Does anyone on the list have experience and recommendations on
>     how to support a 4k monitor under Linux? We want to use a single
>     Dell 27" 4k monitor (P2715Q) with a CentOS 7 system. What would be
>     a good choice for a PCIe x16 video card, preferably with
>     DisplayPort output, that can support 4k at 60 Hz and has good driver
>     support under X.org - hopefully without having to resort to 3rd
>     party pre-compiled, version-specific binary kernel modules? If we
>     can keep the price for the card below $200-$300 that would be great.
>     Unfortunately my Google searches this morning for this have had a
>     pretty low signal to noise ratio. Mostly people having problems
>     with nVidia drivers.
>     Possibly relevant h/w info: ASUS M5A78L-Mlx+ motherboard and AMD
>     FX-6350 CPU. Power supply has a spare 6-pin (3x2) PCI-E power
>     connector for cards that require a dedicated power connection.
>     Thanks for any advice.
>     Gilles

Gilles R. Detillieux              E-mail: <grdetil at scrc.umanitoba.ca>
Spinal Cord Research Centre       WWW:    http://www.scrc.umanitoba.ca/
Dept. of Physiology and Pathophysiology, Rady Faculty of Health Sciences,
Univ. of Manitoba  Winnipeg, MB  R3E 0J9  (Canada)

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