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marchelloUA 12-09-2014 09:12 AM
two displays - how do I make work the second?
 
Hi all,

I have two displays - how do I make work the second?
I installed "arandr", what next? The second display still doesn't work under linux (but it does work under windows... Could you please kindly help to perform all required steps?
Thanks ahead.

Lubuntu 14.04.1 LTS

pan64 12-09-2014 09:22 AM
what kind of video card do you have? What kind of GUI do you have?

marchelloUA 12-09-2014 10:13 AM
Quote:
Originally Posted by pan64 (Post 5281950)
what kind of video card do you have? What kind of GUI do you have?
Please tell me more details about GUI, how can I check in console what kind of GUI I have. Maybe you mean what kind of desktop? It is Lubuntu 14.04.1 LTS.

Please find information about my hardware below.

Code:
$ lspci -v | less

00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
        Subsystem: ASUSTeK Computer Inc. Device 84ca
        Flags: bus master, fast devsel, latency 0
        Capabilities: <access denied>

00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0
        Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
        Subsystem: ASUSTeK Computer Inc. Device 84ca
        Flags: bus master, fast devsel, latency 0, IRQ 48
        Memory at f7800000 (64-bit, non-prefetchable) [size=4M]
        Memory at e0000000 (64-bit, prefetchable) [size=256M]
        I/O ports at f000 [size=64]
        Expansion ROM at <unassigned> [disabled]
        Capabilities: <access denied>
        Kernel driver in use: i915

00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04) (prog-if 30 [XHCI])
        Subsystem: ASUSTeK Computer Inc. P8 series motherboard
        Flags: bus master, medium devsel, latency 0, IRQ 44
        Memory at f7d00000 (64-bit, non-prefetchable) [size=64K]
        Capabilities: <access denied>
        Kernel driver in use: xhci_hcd

00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 (rev 04)
        Subsystem: ASUSTeK Computer Inc. P8 series motherboard
        Flags: bus master, fast devsel, latency 0, IRQ 47
        Memory at f7d1a000 (64-bit, non-prefetchable) [size=16]
        Capabilities: <access denied>
        Kernel driver in use: mei_me

00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 (rev 04) (prog-if 20 [EHCI])
        Subsystem: ASUSTeK Computer Inc. P8 series motherboard
        Flags: bus master, medium devsel, latency 0, IRQ 16
        Memory at f7d18000 (32-bit, non-prefetchable) [size=1K]
        Capabilities: <access denied>
        Kernel driver in use: ehci-pci

00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)
        Subsystem: ASUSTeK Computer Inc. Device 84a8
        Flags: bus master, fast devsel, latency 0, IRQ 49
        Memory at f7d10000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: snd_hda_intel

00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 (rev c4) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0
        Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:1c.4 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 5 (rev c4) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0
        Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
        I/O behind bridge: 0000e000-0000efff
        Memory behind bridge: f7c00000-f7cfffff
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:1c.5 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 6 (rev c4) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0
        Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
        I/O behind bridge: 0000d000-0000dfff
        Prefetchable memory behind bridge: 00000000f0000000-00000000f00fffff
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:1c.6 PCI bridge: Intel Corporation 82801 PCI Bridge (rev c4) (prog-if 01 [Subtractive decode])
        Flags: bus master, fast devsel, latency 0
        Bus: primary=00, secondary=05, subordinate=06, sec-latency=0
        Capabilities: <access denied>

00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 (rev 04) (prog-if 20 [EHCI])
        Subsystem: ASUSTeK Computer Inc. P8 series motherboard
        Flags: bus master, medium devsel, latency 0, IRQ 23
        Memory at f7d17000 (32-bit, non-prefetchable) [size=1K]
        Capabilities: <access denied>
        Kernel driver in use: ehci-pci

00:1f.0 ISA bridge: Intel Corporation Z77 Express Chipset LPC Controller (rev 04)
        Subsystem: ASUSTeK Computer Inc. P8 series motherboard
        Flags: bus master, medium devsel, latency 0
        Capabilities: <access denied>
        Kernel driver in use: lpc_ich

00:1f.2 SATA controller: Intel Corporation 7 Series/C210 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04) (prog-if 01 [AHCI 1.0])
        Subsystem: ASUSTeK Computer Inc. P8 series motherboard
        Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 46
        I/O ports at f0b0 [size=8]
        I/O ports at f0a0 [size=4]
        I/O ports at f090 [size=8]
        I/O ports at f080 [size=4]
        I/O ports at f060 [size=32]
        Memory at f7d16000 (32-bit, non-prefetchable) [size=2K]
        Capabilities: <access denied>
        Kernel driver in use: ahci

00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller (rev 04)
        Subsystem: ASUSTeK Computer Inc. P8 series motherboard
        Flags: medium devsel, IRQ 11
        Memory at f7d15000 (64-bit, non-prefetchable) [size=256]
        I/O ports at f040 [size=32]

03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01)
        Subsystem: ASUSTeK Computer Inc. Device 84b5
        Flags: bus master, fast devsel, latency 0, IRQ 16
        I/O ports at e000 [size=256]
        Memory at f7c00000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: rtl8192ce

04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 09)
        Subsystem: ASUSTeK Computer Inc. P8 series motherboard
        Flags: bus master, fast devsel, latency 0, IRQ 45
        I/O ports at d000 [size=256]
        Memory at f0004000 (64-bit, prefetchable) [size=4K]
        Memory at f0000000 (64-bit, prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: r8169

05:00.0 PCI bridge: ASMedia Technology Inc. ASM1083/1085 PCIe to PCI Bridge (rev 03) (prog-if 01 [Subtractive decode])
        Flags: bus master, fast devsel, latency 0
        Bus: primary=05, secondary=06, subordinate=06, sec-latency=32
        Capabilities: <access denied>

pan64 12-09-2014 10:28 AM
so it looks like you have an intel VGA. Lubuntu 14.04.1 LTS itself is not a desktop, the desktop is for example Gnome, Unity or KDE. Also it looks like kernel loaded the driver (i915). try to use xrandr to configure your display

marchelloUA 12-09-2014 11:03 AM
Quote:
Originally Posted by pan64 (Post 5281991)
so it looks like you have an intel VGA. Lubuntu 14.04.1 LTS itself is not a desktop, the desktop is for example Gnome, Unity or KDE. Also it looks like kernel loaded the driver (i915). try to use xrandr to configure your display
Code:
$ echo $DESKTOP_SESSION
Lubuntu
How do I use xrandr to configure my display? I'm newbie, please tell me more details if possible. Thanks ahead.

pan64 12-09-2014 12:45 PM
Here are you can find some tips to identify your desktop, but lubuntu uses LXDE by default:
http://superuser.com/questions/96151...g-kde-or-gnome

and here you can find some tips to configure dual monitor on LXDE

neerajkolte 12-10-2014 04:24 AM
xrandr use
 
Hi,
Code:
xrandr -q
Should give you info about what and how displays are connected to your machine and their current resolutions.
On my computer, my screens are “VGA1″ and “HDMI1″.To make one large desktop including both screens (Extended Desktop), I run this command:
Code:
xrandr --output VGA1 --right-of HDMI1
That is all it takes. You can play around with it set individual resolutions etc...

Also see all of xrandr’s command options by running
Code:
xrandr -help
Also see This guide and This man page.

Hope this helps.


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