CentOS 7 And 4K Display
I installed C7 along with MATE desktop…
My monitor is a 4K unit but when I goto the System -> preferences -> hardware -> Displays there is selection for the 4K display. It stops at 1920×1080.
The var log x file shows the 4K resolutions in the file so that is good.
How do I get the selections for 4K to show up?
Thanks,
Jerry
12 thoughts on - CentOS 7 And 4K Display
Hi Jerry,
I believe there is no support for 4K in MATE yet, a nice problem to have though.
I’d check Gnome or KDE.
My monitor runs at 2560×1440 with CentOS 7 and Mate. I have to use the displayport connection between the computer and the monitor to make it work, though.
On my Fujitsu Ultrabook U904 I have screen 3200×1800 and under mate it uses full resolution. The only catch here is: I run FreeBSD (10.3), but still I would agree: it will be a good idea to check how the screen is connected. E.G., if it is DVI, then it should be dual link DVI cable, not just regular one…
Valeri
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Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247
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perhaps you should be report to mate forum’s.
What is your graphics card model?
Which driver are you using?
What connector are you using (DVI, Display Port, HDMI)?
Does it work at 4k with Gnome, or KDE?
| What is your graphics card model?
NVIDIA Corporation GK208 [GeForce GT 720] This does 4K
| Which driver are you using?
I am using the NOUVEAU at this time
| What connector are you using (DVI, Display Port, HDMI)?
HDMI
| Does it work at 4k with Gnome, or KDE?
Yes has worked under Gnome
The /var/log/X log file shows it present from the monitor. grep 3840 /var/log/Xorg.0.log
[ 6.540] (II) NOUVEAU(0): h_active: 3840 h_sync: 3888 h_sync_end 3920
h_blank_end 4000 h_border: 0
[ 6.540] (II) NOUVEAU(0): h_active: 3840 h_sync: 4016 h_sync_end 4104
h_blank_end 4400 h_border: 0
[ 6.996] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 533.25 3840 3888
3920 4000 2160 2163 2168 2222 +hsync -vsync (133.3 kHz eP)
[ 6.996] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 297.00 3840 4016
4104 4400 2160 2168 2178 2250 +hsync -vsync (67.5 kHz e)
[ 7.104] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 533.25 3840 3888
3920 4000 2160 2163 2168 2222 +hsync -vsync (133.3 kHz eP)
[ 7.104] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 297.00 3840 4016
4104 4400 2160 2168 2178 2250 +hsync -vsync (67.5 kHz e)
[ 8.290] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 533.25 3840 3888
3920 4000 2160 2163 2168 2222 +hsync -vsync (133.3 kHz eP)
[ 8.290] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 297.00 3840 4016
4104 4400 2160 2168 2178 2250 +hsync -vsync (67.5 kHz e)
[ 11.932] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 533.25 3840 3888
3920 4000 2160 2163 2168 2222 +hsync -vsync (133.3 kHz eP)
[ 11.932] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 297.00 3840 4016
4104 4400 2160 2168 2178 2250 +hsync -vsync (67.5 kHz e)
[ 13.939] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 533.25 3840 3888
3920 4000 2160 2163 2168 2222 +hsync -vsync (133.3 kHz eP)
[ 13.939] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 297.00 3840 4016
4104 4400 2160 2168 2178 2250 +hsync -vsync (67.5 kHz e)
[ 14.076] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 533.25 3840 3888
3920 4000 2160 2163 2168 2222 +hsync -vsync (133.3 kHz eP)
[ 14.076] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 297.00 3840 4016
4104 4400 2160 2168 2178 2250 +hsync -vsync (67.5 kHz e)
[ 14.212] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 533.25 3840 3888
3920 4000 2160 2163 2168 2222 +hsync -vsync (133.3 kHz eP)
[ 14.212] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 297.00 3840 4016
4104 4400 2160 2168 2178 2250 +hsync -vsync (67.5 kHz e)
[ 14.349] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 533.25 3840 3888
3920 4000 2160 2163 2168 2222 +hsync -vsync (133.3 kHz eP)
[ 14.349] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 297.00 3840 4016
4104 4400 2160 2168 2178 2250 +hsync -vsync (67.5 kHz e)
[ 14.624] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 533.25 3840 3888
3920 4000 2160 2163 2168 2222 +hsync -vsync (133.3 kHz eP)
[ 14.624] (II) NOUVEAU(0): Modeline “3840×2160″x0.0 297.00 3840 4016
4104 4400 2160 2168 2178 2250 +hsync -vsync (67.5 kHz e)
I find no errors throwing out the mode.
Thanks,
Jerry
I would suggest trying the NVIDIA proprietary driver from the ELRepo
rpm –import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-2.el7.elrepo.noarch.rpm
yum install kmod-nvidia
reboot
–6jR8MTUtfsp1L6pkJeUOKtnGsmMMKuELt Content-Type: text/plain; charset=windows-1252
Content-Transfer-Encoding: quoted-printable
I would absolutely agree that the nvidia driver is going to likely support 4K better than the NOUVEAU driver.
–6jR8MTUtfsp1L6pkJeUOKtnGsmMMKuELt
It probably would be better to say “nv” driver in this case. My understanding is (someone correct me if I’m wrong here) that nouveay
“driver” is just a wrapper that figures out what video chipset you have and loads appropriate open source driver (nv in this case) for that chipset.
And indeed, nvidia proprietary driver “will work better” for less trivial cases. E.g., if you attach two screens with different resolution. open source driver will not handle it, whereas proprietary driver will. This is why I, to the contrary to majority of Linux folks, never favored nvidia. ATI (at least before they were bought by AMD) and matrox were disclosing much more detail about their chips, thus providing to open source developers sufficient information about chip internals to write decent driver. I also am set off by many people saying “recompile nvidia driver”
for new kernel. It is not the driver you are recompiling. It merely is the interface between precompiled by Nvidia binary driver and different kernel.
Valeri
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Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247
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No, it would be wrong.
No. https://nouveau.freedesktop.org/wiki/
But if you want to do proper OpenGL, nVidia’s solution has wiped the floor with AMD’s in terms of capabilities, stability, and consistent behaviour between versions.
jh
Valeri Galtsev wrote:
Perhaps, but *every* time I have to deal with ATI cards, it’s a royal pain. Esp. since the Catalyst drives is now “replaced” (except it wasn’t available for Linux, when I was trying to use it in the late fall. I had to replace a couple of users’ video cards with *old* NVidia ones, after I
rebuilt them as CentOS 7, because I *could* *not* get them to respond properly to their visualization software, nor to one’s 27″? 29″ diagonal monitor; it wouldn’t support the video mode.
At least I *can* rebuild it, NVidia does support it that way, and the rebuild always works.
mark
On Windows (completely different software I know)
I’ve never been able to get 4K monitors to work using HDMI 1.2. They always max out at 1080. Simply using DisplayPort, everything else being equal, fixes the problem. Same on Macs.
Jon Forrest