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4k display in Linux


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#1 OFFLINE   sunrat

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Posted 03 October 2015 - 11:36 AM

Does anyone have experience using 4k display with Linux? Just wondering if there are hurdles to overcome. Presumably I would have to use Nvidia proprietary driver for 4k. It looks like I'd need a GTX970 as well for acceptable gaming.
My 27" HD monitor has decided to die and some 4k monitors are getting down to my price range (at a big stretch :) ). And I'd love not to see pixels like HD on 27".
Considering:
http://www.centrecom...-gaming-monitor
Also this graphics card:
http://www.centrecom...b-graphics-card
Don't be shocked by prices, the Aussie dollar exchange rate has nosedived lately. :(
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#2 OFFLINE   securitybreach

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Posted 03 October 2015 - 11:43 AM

No real issues although this will give you some tips for various environments: https://wiki.archlin...index.php/HiDPI
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#3 OFFLINE   sunrat

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Posted 03 October 2015 - 12:09 PM

Cheers!
Here's the current problem
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It's OK till it warms up, not helped by being 31°C today.

(So Imgur doesn't give thumbnail code any more. :( )
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#4 OFFLINE   securitybreach

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Posted 03 October 2015 - 12:11 PM

View Postsunrat, on 03 October 2015 - 12:09 PM, said:

Cheers!
Here's the current problem
Posted Image

It's OK till it warms up, not helped by being 31°C today.

Is that your old monitor?
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#5 OFFLINE   burninbush

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Posted 03 October 2015 - 12:54 PM

View Postsunrat, on 03 October 2015 - 11:36 AM, said:

Does anyone have experience using 4k display with Linux? Just wondering if there are hurdles to overcome. Presumably I would have to use Nvidia proprietary driver for 4k. It looks like I'd need a GTX970 as well for acceptable gaming.
My 27" HD monitor has decided to die and some 4k monitors are getting down to my price range (at a big stretch :) ). And I'd love not to see pixels like HD on 27".
Considering:
http://www.centrecom...-gaming-monitor
http://www.centrecom...-hdmi-288p6ljeb
Also this graphics card:
http://www.centrecom...n-graphics-card
http://www.centrecom...b-graphics-card
Don't be shocked by prices, the Aussie dollar exchange rate has nosedived lately. :(


What I did here was to throw down the money to get a Sony Bravia 4k, the 43" model.  VERY fine pic.  It upscales all input to the 4k resolution.

And shortly after I discovered that none of my pc's would do better than 2560 wide.  So I recently bought a new vid card, an MSI "GeForce GT-720" which has a gig of memory onboard, and runs quietly with no fan.  Has DVI and hdmi output jacks in addition to the ordinary VGA 15-pin.   I'm not interested in gaming, you might need more horsepower for that.   The dvd that came with the card has a very recent Nvidia driver on it.

There is quite a bit of 4k content on Youtube, and a growing amount on Netflix.  But my big surprise is how much better regular HD looks on the Sony.  They say a net connection that can maintain at least 15 Megabits is required for online video.  

All that said, I hardly use the pc connected to it, since the Sony has built-in Youtube and Netflix apps -- plus a bunch more.

#6 OFFLINE   abarbarian

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Posted 03 October 2015 - 04:34 PM

Love you  old screen sunrat. Bet your much happier with the new one. :clap:
Install ARCH
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#7 OFFLINE   sunrat

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Posted 03 October 2015 - 08:50 PM

View Postsecuritybreach, on 03 October 2015 - 12:11 PM, said:

Is that your old monitor?
Sure is. I got about 7 years out of it so not too bad. Still, the LG 19" one I replaced with it was still working perfectly last time I tried it. Will be using it again now temporarily.
@burninbush I think 43" may be a bit large on my desk! We have a nice 50-something inch LG in the loungeroom which has a beautiful picture, one of the best I've seen. Don't think my eyes are good enough to appreciate 4k just for TV though.
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#8 OFFLINE   securitybreach

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Posted 03 October 2015 - 09:15 PM

View Postsunrat, on 03 October 2015 - 08:50 PM, said:

View Postsecuritybreach, on 03 October 2015 - 12:11 PM, said:

Is that your old monitor?
Sure is. I got about 7 years out of it so not too bad. Still, the LG 19" one I replaced with it was still working perfectly last time I tried it. Will be using it again now temporarily.
@burninbush I think 43" may be a bit large on my desk! We have a nice 50-something inch LG in the loungeroom which has a beautiful picture, one of the best I've seen. Don't think my eyes are good enough to appreciate 4k just for TV though.

Yeah, then its definitely going out and fixing it would probably cost more than another screen that size.
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#9 OFFLINE   abarbarian

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Posted 04 October 2015 - 05:54 AM

View Postsunrat, on 03 October 2015 - 11:36 AM, said:

Don't be shocked by prices, the Aussie dollar exchange rate has nosedived lately. :(

Me I am shocked !!!! That card is £40 more expensive over here. :'(
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#10 OFFLINE   sunrat

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Posted 05 October 2015 - 10:09 AM

View Postabarbarian, on 04 October 2015 - 05:54 AM, said:

View Postsunrat, on 03 October 2015 - 11:36 AM, said:

Don't be shocked by prices, the Aussie dollar exchange rate has nosedived lately. :(

Me I am shocked !!!! That card is £40 more expensive over here. :'(
Centrecom is one of the cheapest local stores. The Gigabyte card was $30 more at another place I regularly shop. The LG monitor is $150 off recommended retail price.
I'm having second thoughts about spending ~$1200 on these. Still very tempted though. Will have to see what third thoughts come up with! :)

ps. I was just looking at the LG display specs again. You can hook up 2 devices and view them both at the same time on split screen! :o
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#11 OFFLINE   abarbarian

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Posted 05 October 2015 - 02:46 PM

Quote

ps. I was just looking at the LG display specs again. You can hook up 2 devices and view them both at the same time on split screen! :o

No brainer then they definitely are worth the money. You can do stuff whilst the missus shops on-line whilst playing footsie on the sofa. :hug:
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#12 OFFLINE   sunrat

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Posted 05 October 2015 - 07:25 PM

View Postabarbarian, on 05 October 2015 - 02:46 PM, said:

Quote

ps. I was just looking at the LG display specs again. You can hook up 2 devices and view them both at the same time on split screen! :o

No brainer then they definitely are worth the money. You can do stuff whilst the missus shops on-line whilst playing footsie on the sofa. :hug:
:) I would need a missus for that though.
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#13 OFFLINE   securitybreach

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Posted 05 October 2015 - 11:54 PM

View Postsunrat, on 05 October 2015 - 07:25 PM, said:

:) I would need a missus for that though.

I know the feeling..
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#14 OFFLINE   sunrat

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Posted 08 October 2015 - 07:20 PM

I bought the LG 4K monitor and the ASUS GTX 970 graphics card. Now to set them up.........
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#15 OFFLINE   sunrat

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Posted 11 October 2015 - 08:42 AM

Working now! A little tweaking to get the latest nvidia driver from the siduction fixes nonfree repo which I didn't have enabled. The driver was just uploaded yesterday and the one from Debian repo couldn't build the module for the current siduction kernel.

It is just beautiful. Text is crisp and clear, colours are rich, photos show amazing detail compared to my old monitors.
Totally worth it! :thumbsup: B)
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#16 OFFLINE   securitybreach

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Posted 11 October 2015 - 02:18 PM

View Postsunrat, on 11 October 2015 - 08:42 AM, said:

Working now! A little tweaking to get the latest nvidia driver from the siduction fixes nonfree repo which I didn't have enabled. The driver was just uploaded yesterday and the one from Debian repo couldn't build the module for the current siduction kernel.

It is just beautiful. Text is crisp and clear, colours are rich, photos show amazing detail compared to my old monitors.
Totally worth it! :thumbsup: B)

Awesome!!
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#17 OFFLINE   securitybreach

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Posted 11 October 2015 - 02:21 PM

View Postsunrat, on 08 October 2015 - 07:20 PM, said:


I bought the LG 4K monitor and the ASUS GTX 970 graphics card. Now to set them up.........

I hope you didn't pay the price your link quotes as it can be had from Amazon for 200 bucks cheaper: $529 versus the $749 that your link quoted...
http://www.amazon.co...r/dp/B012BPM87E


Never mind, I seen your quote about the Aussie inflation
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#18 OFFLINE   sunrat

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Posted 14 October 2015 - 09:14 PM

Just a few notes in case someone else wants to run 4k. My system:
inxi -b
System: Host: brain Kernel: 4.2.3-towo.1-siduction-amd64 x86_64 (64 bit) Desktop: KDE Plasma 5.4.2
Distro: siduction 13.2.0 December - kde - (201312310241)
Machine: Mobo: Gigabyte model: EP45-UD3R v: x.x Bios: Award v: F3 date: 09/18/2008
CPU: Dual core Intel Core2 Duo E8500 (-MCP-) speed/max: 2000/3166 MHz
Graphics: Card: NVIDIA GM204 [GeForce GTX 970]
Display Server: X.Org 1.17.2 driver: nvidia Resolution: 3840x2160@60.00hz
GLX Renderer: GeForce GTX 970/PCIe/SSE2 GLX Version: 4.5.0 NVIDIA 352.41
- install Nvidia drivers. Debian Jessie instructions work for siduction and probably most recent Debian derivatives.
https://wiki.debian....GraphicsDrivers
If you already have kernel headers installed and have nonfree repo active, you can just
apt-get update && apt-get install nvidia-driver

- remember to make an xorg.conf file either manually or with nvidia-xconfig. (I forgot and was greeted with a black screen with blinking cursor).
I had a GTX 560Ti already so installed the drivers before installing the new GTX 970 card. This card would not display 4k. Check the specs of your graphics card to see if it does 3840 x 2160 resolution.

- switch off, plug in the monitor via DisplayPort and boot.
- you may need to set display resolution. You can install and use nvidia-settings or the native settings. In KDE Plasma 5 it's System Settings > Display And Monitor > Display Configuration
- now everything will be tiny! First, set the font DPI. KDE System Settings > Fonts > Force Fonts DPI . I set it to 192. Now set your default font sizes.
- application windows will need to be resized as you first use them. Hopefully the window manager remembers them
- Some applications will need minor tweaks to settings. Some applications just won't play ball. eg. QMMP refuses to allow its playlist window to be resized.

- but overall it's an extremely pleasant experience. The clarity and richness of the screen are a joy to behold. :thumbsup: B)
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#19 OFFLINE   securitybreach

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Posted 15 October 2015 - 09:25 AM

Thanks man. Hopefully one day I can afford such a nice monitor..
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#20 OFFLINE   abarbarian

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Posted 18 October 2015 - 09:14 AM

Better Than a Quad-Head Display: My Adventures with "4K" 2160p and Linux


Quote

Imagine having the equivalent of four 1920x1080 monitors in a 2x2 grid, on your desk, with absolutely no seam between them. This article describes my journey towards that goal...

Thought you guys would enjoy this read. :228823:
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#21 OFFLINE   securitybreach

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Posted 18 October 2015 - 10:02 AM

View Postabarbarian, on 18 October 2015 - 09:14 AM, said:

Thought you guys would enjoy this read. :228823:

Four sure
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