My Pc does not detect the second monitor attached on DVI, in preferences->monitor it show only main monitor.xrandr output:xrandr: Failed to get size of gamma for output defaultScreen 0: minimum 640 x 480, current 1920 x 1080, maximum 1920 x 1080default connected primary 1920x1080+0+0 0mm x 0mm   1920x1080      0.00*    1280x1024      0.00     1024x768       0.00     800x600        0.00     640x480        0.00  lspci 00:00.0 Host bridge: Intel Corporation Sky Lake Host Bridge/DRAM Registers (rev 07)00:02.0 VGA compatible controller: Intel Corporation Sky Lake Integrated Graphics (rev 06)00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller (rev 31)00:16.0 Communication controller: Intel Corporation Sunrise Point-H CSME HECI #1 (rev 31)00:17.0 SATA controller: Intel Corporation Sunrise Point-H SATA controller [AHCI mode] (rev 31)00:1c.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #5 (rev f1)00:1d.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #9 (rev f1)00:1d.1 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #10 (rev f1)00:1f.0 ISA bridge: Intel Corporation Sunrise Point-H LPC Controller (rev 31)00:1f.2 Memory controller: Intel Corporation Sunrise Point-H PMC (rev 31)00:1f.3 Audio device: Intel Corporation Sunrise Point-H HD Audio (rev 31)00:1f.4 SMBus: Intel Corporation Sunrise Point-H SMBus (rev 31)01:00.0 PCI bridge: ASMedia Technology Inc. ASM1083/1085 PCIe to PCI Bridge (rev 04)04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)CPUINFOprocessor       : 0vendor_id       : GenuineIntelcpu family      : 6model           : 94model name      : Intel(R) Core(TM) i7-6700 CPU @ 3.40GHzstepping        : 3microcode       : 0x9eThe Graphic card should be an Intel 530, any help would be appreciate.
SOLVED Can't detect second Monitor DVI Debian Jessie
debian;intel graphics