> > I'm guessing that the computer is running when you put it in the dock and > that if you started it while docked you'd get the second output.
Yes my PC running while docked it. I can't see the second monitor. Can you do an lspci before and after docking and compare the difference? 00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller (rev 06) 00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06) 00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06) 00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 05) 00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04) 00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I217-V (rev 05) 00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 05) 00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05) 00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d5) 00:1c.1 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #2 (rev d5) 00:1c.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #3 (rev d5) 00:1c.4 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #5 (rev d5) 00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 05) 00:1f.0 ISA bridge: Intel Corporation HM86 Express LPC Controller (rev 05) 00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05) 00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05) 02:00.0 Network controller: Intel Corporation Wireless 7260 (rev 6b) 08:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5227 PCI Express Card Reader (rev 01) My PC is a *THINKPAD L540*. I tried with Fn F7, but works only after restart of gdm.service. When I deattach the docking station the PC do a logout (this is another issue). Before Debian, I used Ubuntu 15.10 and I didn't have this issue. This is my dmesg command: http://pastebin.com/0ccZGRKJ Thanks a lot for support On Wed, Feb 3, 2016 at 4:21 PM, Joshua M. Boniface <jos...@boniface.me> wrote: > I'm not sure exactly what laptop model you're using, but in my case, after > connecting my T450s to the dock, sometimes I have to press the "monitor > select" button (F7) to get the second monitor to display. It seems to > default randomly to single-monitor (laptop) mode. However I've not checked > if it shows up in xrandr in this state as the workaround for me is fairly > simple. > > -- > Joshua M. Boniface > Linux System Administrator > Sigmentation fault. Core dumped. > > On 03/02/16 04:27 AM, Fedele Mantuano wrote: > > Hi, > > > > I'm debian jessie user. I can detect external monitor only after restart > of gdm.service. Can you help me? > > > > xrandrcommand before restart gdm.service: > > > > Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192 > > eDP1 connected primary 1366x768+0+0 (normal left inverted right x axis y > axis) 344mm x 194mm > > 1366x768 60.00*+ > > 1360x768 59.80 59.96 > > 1024x768 60.00 > > 800x600 60.32 56.25 > > 640x480 59.94 > > VGA1 disconnected (normal left inverted right x axis y axis) > > DP1 disconnected (normal left inverted right x axis y axis) > > HDMI1 disconnected (normal left inverted right x axis y axis) > > DP2 disconnected (normal left inverted right x axis y axis) > > HDMI2 disconnected (normal left inverted right x axis y axis) > > > > xrandr command after restart gdm.service: > > > > Screen 0: minimum 320 x 200, current 1600 x 900, maximum 8192 x 8192 > > eDP1 connected (normal left inverted right x axis y axis) > > 1366x768 60.00 + > > 1360x768 59.80 59.96 > > 1024x768 60.00 > > 800x600 60.32 56.25 > > 640x480 59.94 > > VGA1 disconnected (normal left inverted right x axis y axis) > > DP1 disconnected (normal left inverted right x axis y axis) > > HDMI1 disconnected (normal left inverted right x axis y axis) > > DP2 disconnected (normal left inverted right x axis y axis) > > HDMI2 disconnected (normal left inverted right x axis y axis) > > DP3 disconnected (normal left inverted right x axis y axis) > > DP4 disconnected (normal left inverted right x axis y axis) > > DP5 connected primary 1600x900+0+0 (normal left inverted right x axis y > axis) 432mm x 240mm > > 1600x900 60.00 + 75.00* > > 1280x1024 75.02 70.00 60.02 > > 1152x864 75.00 > > 1024x768 75.08 70.07 60.00 > > 832x624 74.55 > > 800x600 72.19 75.00 60.32 56.25 > > 640x480 75.00 72.81 60.00 > > 720x400 70.08 > > > > My lspcioutput: > > > > 00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core > Processor DRAM Controller (rev 06) > > 00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core > Processor Integrated Graphics Controller (rev 06) > > 00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core > Processor HD Audio Controller (rev 06) > > 00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset > Family USB xHCI (rev 05) > > 00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series > Chipset Family MEI Controller #1 (rev 04) > > 00:19.0 Ethernet controller: Intel Corporation Ethernet Connection > I217-V (rev 05) > > 00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset > Family USB EHCI #2 (rev 05) > > 00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset > High Definition Audio Controller (rev 05) > > 00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset > Family PCI Express Root Port #1 (rev d5) > > 00:1c.1 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset > Family PCI Express Root Port #2 (rev d5) > > 00:1c.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset > Family PCI Express Root Port #3 (rev d5) > > 00:1c.4 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset > Family PCI Express Root Port #5 (rev d5) > > 00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset > Family USB EHCI #1 (rev 05) > > 00:1f.0 ISA bridge: Intel Corporation HM86 Express LPC Controller (rev > 05) > > 00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset > Family 6-port SATA Controller 1 [AHCI mode] (rev 05) > > 00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family > SMBus Controller (rev 05) > > 02:00.0 Network controller: Intel Corporation Wireless 7260 (rev 6b) > > 08:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5227 > PCI Express Card Reader (rev 01) > > > > > > Regards > > -- > > /Fedele Mantuano/ > > -- *Fedele Mantuano*
