On 10/10/2014, Bret Busby <[email protected]> wrote: > This will probably show as a new thread, due to me correcting a > spelling error in the Subject field of the message. > > On 08/10/2014, Joe <[email protected]> wrote: >> On Wed, 8 Oct 2014 15:23:55 +0800 >> Bret Busby <[email protected]> wrote: >> >>> Hello. >>> >>> I have a 23" monitor, that I want to use with two of my laptop >>> computers (not at the same time). >>> >>> I have a 15" laptop, with an i3 CPU, running Debian 6 LTS and GNOME2. >>> >>> With the external monitor connected and switched on, upon bootup, the >>> external monitor is automatically operational, and, replaces the >>> laptop display. >>> >>> That is good. >>> >>> The other laptop has a 17" display and an i7CPU, and is running Debian >>> 7.x and LXDE. >>> >>> With that laptop, with the external monitor connected and switched on, >>> upon boot up and during a boot session, the external monitor does not >>> work, and, is apparently not visible to the computer. The laptop >>> display is operational, and no signal appears to be going from the >>> laptop. Synaptic shows lxrandr to be installed, but the exernal >>> monitor is not detected. >>> >>> In Preferences -> Monitors, only one monitor is shown; the laptop >>> display. >>> >>> I also tried logging in to a GNOME Classic session, but got the same >>> result. >>> >>> Both scenario's involve the use od a VGA cable and connection to the >>> VGA socket on each of the respective laptops. That it is using the >>> supplied VGA cable, and not aDVI or HDMI cable, is not a problem for >>> me, as I find the resolution to be good enough for me. >>> >>> How do I get the external monitor to be detected, and, work, with the >>> Debian7/LXDE system? >>> >> >> Something I would suggest you try soon is a different model of external >> monitor. If you spend weeks fiddling about with drivers and then find >> the VGA socket on this laptop simply doesn't work, you will feel >> foolish, trust me on this. >> >> Something else to try would be booting up a live CD of a more >> commercial kind, such as Ubuntu or preferably Knoppix, to find out: >> a) if it works >> b) if so, what drivers it is using >> >> Is the external monitor going into standby, by the way? I have an old >> laptop and know of someone else's monitor which simply doesn't work >> with it. The laptop VGA circuits want to see an active monitor >> connected before they will power up, and the monitor wants to see a >> live signal before it will come out of standby, or avoid going into >> standby from switch-on... I haven't found any combination of switch-on >> time and plugging that will actually allow them to work together, >> though I presume there is a window of a few microseconds when they >> would find each other. The laptop is fine with other monitors, the >> monitor with other laptops. >> > > I have downloaded Ubuntu 14.04.1 LTS amd64 iso, and tried that. > > One interesting observation, is that, with the 15" laptop running > Debian 6 LTS, on bootup, all video output goes to the external monitor > (and to only that monitor), and, with the 17" laptop running Debian 7 > (and then Ubuntu 14.04.1 LTS), the ACER spalsh screen and the BIOS > screen, go toonly the laptop monitor. > > That made me wonder whether either the BIOS or the graphics card, > could not deal with the external monitor. > > However, with Unbuntu 14.04.1 LTS, which took 10-15 minutes (on an i7 > CPU with 32GM RAM) to boot, the output started to appear on the > external monitor, after the weird double icon with the equal sign at > the bottom of the screen, so I got the Ubuntu word, with the simulated > LED flashing things (a fake progree bar) appearing on both screens. > > At the end of the bootup, I have on the external monitor, a workspace > (?) with a panel/taskbar, and no icons on the desktop, and, on the > laptop display, I have a workspace with the dialogue box or window, > with the Welcome thing, with the options to select the languge, and to > select "Try Ubuntu" or "Install Ubuntu". > > In selecting "Try Ubuntu", I get a desktop on each of the two screens; > the one on the external monitor does not have the two icons "Examples" > and "Install Ubuntu 14.04.1 LTS", whereas the display on the laptop > does include those two icons. > > I can not find how to get the pointer off the laptop display and on to > the external monitor. > > In selecting (on the laptop display), the System Settings -> Displays, > I get both monitors displayed. > > When I select , for "Built In Display", "Off", the laptop display goes > off, for a short period, and all control goes to the external monitor, > and then the laptop display comes back on, with the pointer and the > "Launcher" (?)icons, all on the external monitor. > > After shuuting down the live session of Ubuntu 14.04.1.LTS and then > booting up Debian 7, to find whether the booting into Ubuntu, had > flicked some switch that would enable displayiong on the external > monitor, in Debian 7, Ifound the system to be unchanged from the > previous advised problem - no external monitor detected. > > In Debian 7.x, selecting (in LXDE) Preferences-> Monitor Settings, > which shows only the laptop display being detected, and the external > monitor not being detected, LXRandR shows as version number 0.1.2 . > > Booting into Ubuntu again, in selecting System Settings -> System -> > Details -> Overview, the Graphics is shown as Intel Haswell (Mobile). > > In System Settings -> Hardware -> Displays, both monitors are shown. > > When I run lshw in Ubuntu, in > pci -> pci:0 -> display, it shows as "3D Controller", the GEForce GT750M, > and, in > pci -> display, it shows as "VGA compatible controller", "4th Gen Core > Processor Integrated Graphics Controller" ; "vendor; Intel > Corporation" > -I assume that to be the Haswell thing. > > I do not know, in Ubuntu, how to get the software name and version > number, that is the equivalent of the "LXRandR version number 0.1.2 > ". > > in the Debian lxterminal lshw output, for both pci:0 -> display, and > display (without the pci:0 ->)the first line, hence, for both the > nVidia and the Haswell controllers, the line states "UNCLAIMED". I do > not know whether that is of any significance; > > " > *-pci:0 > description: PCI bridge > product: Haswell PCI Express x16 Controller > vendor: Intel Corporation > physical id: 1 > bus info: pci@0000:00:01.0 > version: 06 > width: 32 bits > clock: 33MHz > capabilities: pci normal_decode bus_master cap_list > configuration: driver=pcieport > resources: irq:40 ioport:4000(size=4096) > memory:d2000000-d2ffffff ioport:a0000000(size=536870912) > *-display UNCLAIMED > description: 3D controller > product: NVIDIA Corporation > vendor: NVIDIA Corporation > physical id: 0 > bus info: pci@0000:01:00.0 > version: a1 > width: 64 bits > clock: 33MHz > capabilities: cap_list > configuration: latency=0 > resources: memory:d2000000-d2ffffff > memory:a0000000-afffffff memory:b0000000-b1ffffff > ioport:4000(size=128) memory:b2000000-b207ffff > *-display UNCLAIMED > description: VGA compatible controller > product: Haswell Integrated Graphics Controller > vendor: Intel Corporation > physical id: 2 > bus info: pci@0000:00:02.0 > version: 06 > width: 64 bits > clock: 33MHz > capabilities: vga_controller bus_master cap_list > configuration: latency=0 > resources: memory:d3000000-d33fffff > memory:c0000000-cfffffff ioport:5000(size=64) > > " > > -- > Bret Busby > Armadale > West Australia > .............. > > "So once you do know what the question actually is, > you'll know what the answer means." > - Deep Thought, > Chapter 28 of Book 1 of > "The Hitchhiker's Guide to the Galaxy: > A Trilogy In Four Parts", > written by Douglas Adams, > published by Pan Books, 1992 > > .................................................... >
I am wondering whether a problem is that Debian 7 apparently does not recognise the nVidia graphics card. In the thread with the subject "Nvidia No GLX to using OpenGL" is reference to https://wiki.debian.org/NvidiaGraphicsDrivers#Version_195.36.31 and, in going there, I found " Identification The NVIDIA graphics processing unit (GPU) series/codename of an installed video card can usually be identified using the lspci command. For example: $ lspci -nn | grep VGA 01:00.0 VGA compatible controller [0300]: NVIDIA Corporation G80 [GeForce 8800 GTS] [10de:0193] (rev a2) See HowToIdentifyADevice/PCI for more information. The PCI ID can be used to verify device support. nvidia-detect The nvidia-detect script (nvidia-detect package in non-free) can also be used to identify the GPU and required driver: $ nvidia-detect Detected NVIDIA GPUs: 02:00.0 VGA compatible controller [0300]: NVIDIA Corporation GF108 [GeForce GT 430] [10de:0de1] (rev a1) Your card is supported by the default drivers. It is recommended to install the nvidia-glx package. " The command line output below (from a root terminal session) shows that the nvidia-detect package was not initially installed, so I installed it, using synaptic, and then ran the command again. " root@bret-av3772g-deb:/home/bret# lspci -nn | grep VGA 00:02.0 VGA compatible controller [0300]: Intel Corporation Haswell Integrated Graphics Controller [8086:0416] (rev 06) root@bret-av3772g-deb:/home/bret# nvidia-detect bash: nvidia-detect: command not found root@bret-av3772g-deb:/home/bret# nvidia-detect No NVIDIA GPU detected. root@bret-av3772g-deb:/home/bret# " My interpretation of that, is that Debian 7 does not detect the nVidia graphics adaptor, which (to me) is weird, given that lshw shows the nVidia graphics adaptor. -- Bret Busby Armadale West Australia .............. "So once you do know what the question actually is, you'll know what the answer means." - Deep Thought, Chapter 28 of Book 1 of "The Hitchhiker's Guide to the Galaxy: A Trilogy In Four Parts", written by Douglas Adams, published by Pan Books, 1992 .................................................... -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: https://lists.debian.org/CACX6j8Oxgx9VKy6s7+gFDaWwuRa6y7X=3fpafay_tnqsrbc...@mail.gmail.com
