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06-08-2021, 12:43 PM
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#1
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Member
Registered: Aug 2004
Posts: 436
Rep: 
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Daisy-chaining monitors mirrors them instead of extending
Running MSI GT80 Titan SLI, with dual Nvidia 980m. Plain Jane CentOS 7 installed, patched. with Gnome.
Two monitors are Dell U3014, both.
I run this config:
CPU -> mini-DP to DP on primary U3014 - DP-out to DP-in (Secondary Dell U3014)
the monitors are mirrored instead of extended. When I go into settings, I get: Could not get screen information.
I have successfully daisy-chained the same monitors with this machine running Win10 so know it can be done. I set the MST to "on" in the OSD.
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06-08-2021, 03:07 PM
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#2
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Member
Registered: Aug 2004
Posts: 436
Original Poster
Rep:
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I don't think this is a hardware issue, it needs to be moved to the General issues sub-forum.
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06-08-2021, 04:31 PM
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#3
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Member
Registered: Jun 2020
Posts: 611
Rep: 
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Top of my head the issue is almost certainly the ancient kernel you've got running there - MST support exists in up-to-date kernels and I've seen it work with Radeon cards (nVidia may or may not arbitrarily lock features out in their drivers - this is part of what you're buying). I'd say install/try a distro from this decade (century?  ) and make sure you've got the nVidia drivers loaded and up to date (or at least new-ish - so something from the 400+ series, I think r460 is the 'current' branch) and give it another go. |
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06-09-2021, 01:14 PM
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#4
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Member
Registered: Aug 2004
Posts: 436
Original Poster
Rep:
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Where do I download the nVidia drivers, do you have a link for Linux drivers on their site?
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06-09-2021, 01:19 PM
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#5
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LQ Veteran
Registered: Feb 2013
Location: Tucson, AZ, USA
Distribution: Rocky 9.5
Posts: 5,883
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Um…
Put into your favorite search engine. |
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06-09-2021, 03:38 PM
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#6
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Member
Registered: Aug 2004
Posts: 436
Original Poster
Rep:
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Yeah, I found it. Followed this procedure and it worked. obobskivich, you were right on the money.
it was a bit more involved than I thought, not just run the *.run script, but disable X, (init 3), edit the grub conf file, generate a new one, etc. Typical Linux.
This below works.
https://linuxconfig.org/how-to-insta...centos-7-linux |
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06-09-2021, 03:47 PM
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#7
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Member
Registered: Aug 2004
Posts: 436
Original Poster
Rep:
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# lshw -numeric -C display | grep -i driver
configuration: driver=nvidia latency=0
configuration: driver=nvidia latency=0
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06-11-2021, 03:28 AM
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#8
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LQ Guru
Registered: Aug 2016
Location: SE USA
Distribution: openSUSE 24/7; Debian, Knoppix, Mageia, Fedora, OS/2, others
Posts: 6,496
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NVidia's proprietary drivers aren't necessary to make MST work on Linux. All four following data sets are from the same pair of displays, an Acer daisy-chained from a Dell, using the upstream default DIX driver (Modesetting), which supports most non-ancient GPUs from AMD, Intel and NVidia:
Code:
# hwinfo --monitor | grep Device
Device: eisa 0x0524 "K272HUL"
Device: eisa 0x408b "DELL U2913WM"
# xrandr --listproviders
Providers: number : 1
Provider 0: id: 0x49 cap: 0x9, Source Output, Sink Offload crtcs: 3 outputs: 7 associated providers: 0 name:modesetting
# xrandr --output DP-1-1 --primary --output DP-1-8 --above DP-1-1
# inxi -SGay
System:
Host: ab250 Kernel: 4.15.0-135-generic x86_64 bits: 64 compiler: gcc v: 7.5.0
parameters:...mitigations=auto consoleblank=0 pci=noaer
Desktop: Trinity R14.1.0 tk: Qt 3.5.0 info: kicker wm: Twin 3.0 vt: 7
dm: TDM Distro: Ubuntu 18.04.5 LTS (Bionic Beaver)
Graphics:
Device-1: Intel HD Graphics 630 vendor: ASUSTeK driver: i915 v: kernel
bus-ID: 00:02.0 chip-ID: 8086:5912 class-ID: 0300
Display: server: X.Org 1.19.6 driver: loaded: modesetting
unloaded: fbdev,vesa display-ID: :0 screens: 1
Screen-1: 0 s-res: 2560x2520 s-dpi: 120 s-size: 541x533mm (21.3x21.0")
s-diag: 759mm (29.9")
Monitor-1: DP-1-8 res: 2560x1080 hz: 60 dpi: 97 size: 673x284mm (26.5x11.2")
diag: 730mm (28.8")
Monitor-2: DP-1-1 res: 2560x1440 hz: 60 dpi: 109
size: 598x336mm (23.5x13.2") diag: 686mm (27")
OpenGL: renderer: Mesa DRI Intel HD Graphics 630 (KBL GT2)
v: 4.6 Mesa 20.0.8 compat-v: 3.0 direct render: Yes
# xrandr | egrep 'onnect|creen|\*' | grep -v disconn | sort -r
Screen 0: minimum 320 x 200, current 2560 x 2520, maximum 8192 x 8192
DP-1-8 connected 2560x1080+0+0 (normal left inverted right x axis y axis) 673mm x 284mm
DP-1-1 connected primary 2560x1440+0+1080 (normal left inverted right x axis y axis) 598mm x 336mm
2560x1440 59.95*+ 74.92
2560x1080 60.00*+
Code:
# xrandr --listproviders
Providers: number : 1
Provider 0: id: 0x49; cap: 0xf (Source Output, Sink Output, Source Offload, Sink Offload); crtcs: 3; outputs: 7; associated providers: 0; name: modesetting
output DP-1
output HDMI-1
output HDMI-2
output HDMI-3
output DP-2
output DP-1-8
output DP-1-1
# xrandr --output DP-1-1 --primary --output DP-1-8 --above DP-1-1
# inxi -SGay
System:
Host: ab250 Kernel: 5.3.18-lp152.41-default x86_64 bits: 64 compiler: gcc
v: 7.5.0
parameters:...mitigations=auto consoleblank=0 pci=noaer
Desktop: KDE 3 info: kicker wm: kwin vt: 7 dm: N/A
Distro: openSUSE Leap 15.2
Graphics:
Device-1: Intel HD Graphics 630 vendor: ASUSTeK driver: i915 v: kernel
bus-ID: 00:02.0 chip-ID: 8086:5912 class-ID: 0300
Display: server: X.Org 1.20.3 driver: loaded: modesetting
unloaded: fbdev,vesa alternate: intel display-ID: :0 screens: 1
Screen-1: 0 s-res: 2560x2520 s-dpi: 120 s-size: 541x533mm (21.3x21.0")
s-diag: 759mm (29.9")
Monitor-1: DP-1-8 res: 2560x1080 hz: 60 dpi: 97 size: 673x284mm (26.5x11.2")
diag: 730mm (28.8")
Monitor-2: DP-1-1 res: 2560x1440 hz: 60 dpi: 109
size: 598x336mm (23.5x13.2") diag: 686mm (27")
OpenGL: renderer: Mesa DRI Intel HD Graphics 630 (Kaby Lake GT2)
v: 4.6 Mesa 19.3.4 compat-v: 3.0 direct render: Yes
# xrandr | egrep 'onnect|creen|\*' | grep -v disconn | sort -r
Screen 0: minimum 320 x 200, current 2560 x 2520, maximum 16384 x 16384
DP-1-8 connected 2560x1080+0+0 (normal left inverted right x axis y axis) 673mm x 284mm
DP-1-1 connected primary 2560x1440+0+1080 (normal left inverted right x axis y axis) 598mm x 336mm
2560x1440 59.95*+ 74.92
2560x1080 60.00*+
Code:
# lscpu | grep Model
Model name: Intel(R) Pentium(R) CPU G3220 @ 3.00GHz ### release date Q3'13
# xrandr --listproviders
Providers: number : 1
Provider 0: id: 0x49 cap: 0x9, Source Output, Sink Offload crtcs: 3 outputs: 7 associated providers: 0 name:modesetting
# xrandr --output DP-1-1 --primary --output DP-1-8 --above DP-1-1
# inxi -SGay
System:
Host: ab85m Kernel: 5.4.0-65-generic x86_64 bits: 64 compiler: gcc v: 9.3.0
parameters:...mitigations=auto consoleblank=0
Desktop: Trinity R14.0.10 tk: Qt 3.5.0 info: kicker wm: Twin 3.0 vt: 7
dm: TDM Distro: Ubuntu 20.04.2 LTS (Focal Fossa)
Graphics:
Device-1: Intel Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics
vendor: ASUSTeK driver: i915 v: kernel bus-ID: 00:02.0 chip-ID: 8086:0402
class-ID: 0300
Display: x11 server: X.Org 1.20.9 driver: loaded: modesetting
unloaded: fbdev,vesa display-ID: :0 screens: 1
Screen-1: 0 s-res: 2560x2520 s-dpi: 120 s-size: 541x533mm (21.3x21.0")
s-diag: 759mm (29.9")
Monitor-1: DP-1-8 res: 2560x1080 hz: 60 dpi: 97 size: 673x284mm (26.5x11.2")
diag: 730mm (28.8")
Monitor-2: DP-1-1 res: 2560x1440 hz: 60 dpi: 109
size: 598x336mm (23.5x13.2") diag: 686mm (27")
OpenGL: renderer: Mesa DRI Intel HD Graphics (HSW GT1) v: 4.5 Mesa 20.2.6
compat-v: 3.0 direct render: Yes
# xrandr | egrep 'onnect|creen|\*' | grep -v disconn | sort -r
Screen 0: minimum 320 x 200, current 2560 x 2520, maximum 16384 x 16384
DP-1-8 connected 2560x1080+0+0 (normal left inverted right x axis y axis) 673mm x 284mm
DP-1-1 connected primary 2560x1440+0+1080 (normal left inverted right x axis y axis) 598mm x 336mm
2560x1440 59.95*+ 74.92
2560x1080 60.00*+
Code:
# xrandr --listproviders
Providers: number : 1
Provider 0: id: 0x49; cap: 0xf (Source Output, Sink Output, Source Offload, Sink Offload); crtcs: 3; outputs: 7; associated providers: 0; name: modesetting
output HDMI-1
output HDMI-2
output DP-1
output HDMI-3
output DP-2
output DP-3
output DP-4
# xrandr --output DP-4 --primary --output DP-3 --above DP-4
# inxi -SGay
System:
Host: gb250 Kernel: 5.3.18-lp152.41-default x86_64 bits: 64 compiler: gcc
v: 7.5.0
parameters:...mitigations=auto consoleblank=0
Desktop: KDE 3 info: kicker wm: kwin vt: 7 dm: N/A
Distro: openSUSE Leap 15.2
Graphics:
Device-1: Intel HD Graphics 630 vendor: Gigabyte driver: i915 v: kernel
bus-ID: 00:02.0 chip-ID: 8086:5912 class-ID: 0300
Display: server: X.Org 1.20.3 driver: loaded: modesetting
unloaded: fbdev,vesa alternate: intel display-ID: :0 screens: 1
Screen-1: 0 s-res: 2560x2520 s-dpi: 120 s-size: 540x532mm (21.3x20.9")
s-diag: 758mm (29.8")
Monitor-1: DP-3 res: 2560x1080 hz: 60 dpi: 97 size: 673x284mm (26.5x11.2")
diag: 730mm (28.8")
Monitor-2: DP-4 res: 2560x1440 hz: 60 dpi: 109 size: 598x336mm (23.5x13.2")
diag: 686mm (27")
OpenGL: renderer: Mesa DRI Intel HD Graphics 630 (Kaby Lake GT2)
v: 4.6 Mesa 19.3.4 compat-v: 3.0 direct render: Yes
# xrandr | egrep 'onnect|creen|\*' | grep -v disconn | sort -r
Screen 0: minimum 320 x 200, current 2560 x 2520, maximum 16384 x 16384
DP-4 connected primary 2560x1440+0+1080 (normal left inverted right x axis y axis) 598mm x 336mm
DP-3 connected 2560x1080+0+0 (normal left inverted right x axis y axis) 673mm x 284mm
2560x1440 59.95*+ 74.92
2560x1080 60.00*+
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