Mint 18.2 on Compulab Airtop PC - no hi-res output on HDMI port of Intel integrated graphics

[phz]

Hello all,

I have a Compulab Airtop PC (http://airtop-pc.com/) here, and I can't get any monitor on the HDMI interfaces to work with a higher resolution than FullHD (1920x1080). Looking at the manufacturer's website, it's an Intel Iris Pro 6200 graphics card which should support 3x 4K: http://airtop-pc.com/airtop/specificati ... 775-W-FM4U

The onbord grahics card has three interfaces (1x DP, 2x HDMI). On the DP interface, I have connected a BENQ display running at 2560x1440 pixels. When I connect a second screen on one of the HDMI ports, it either doesn't come up at all or it's running at 1920x1080 pixels, but arandr won't let me select a higher resolution.

I've tried many different monitors and cables. I've also tested the monitors on other PCs, to make sure they work fine with higher resolutions.

This is what "inxi -Fxz" says:

Code: Select all

System:    Host: xxxxxxx-airtop Kernel: 4.10.0-40-generic x86_64 (64 bit gcc: 5.4.0) Console: tty 1
           Distro: Linux Mint 18.2 Sonya
Machine:   System: CompuLab product: Airtop v: NA
           Mobo: CompuLab model: Airtop v: 1.2 Bios: Phoenix v: ARTP-3.1.0.637.3.0 X64 date: 09/19/2016
CPU:       Quad core Intel Core i7-5775C (-HT-MCP-) cache: 6144 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 26339
           clock speeds: max: 3700 MHz 1: 900 MHz 2: 1202 MHz 3: 1230 MHz 4: 1179 MHz 5: 1800 MHz 6: 1488 MHz
           7: 1062 MHz 8: 1487 MHz
Graphics:  Card: Intel Broadwell-U Integrated Graphics bus-ID: 00:02.0
           Display Server: X.org 1.18.4 drivers: intel (unloaded: fbdev,vesa)
           tty size: 209x90 Advanced Data: N/A for root out of X
Audio:     Card-1 Intel 8 Series/C220 Series High Definition Audio Controller
           driver: snd_hda_intel bus-ID: 00:1b.0
           Card-2 Intel Broadwell-U Audio Controller driver: snd_hda_intel bus-ID: 00:03.0
           Sound: Advanced Linux Sound Architecture v: k4.10.0-40-generic
Network:   Card-1: Intel Ethernet Connection I218-LM driver: e1000e v: 3.2.6-k port: 4080 bus-ID: 00:19.0
           IF: enp0s25 state: down mac: <filter>
           Card-2: Intel Wireless 7260 driver: iwlwifi bus-ID: 03:00.0
           IF: wlp3s0 state: down mac: <filter>
           Card-3: Intel I210 Gigabit Network Connection driver: igb v: 5.4.0-k port: 3000 bus-ID: 04:00.0
           IF: enp4s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
Drives:    HDD Total Size: 256.1GB (21.8% used) ID-1: /dev/sda model: BIWIN_SSD size: 256.1GB temp: 35C
Partition: ID-1: / size: 23G used: 7.6G (35%) fs: ext4 dev: /dev/sda2
           ID-2: /var size: 14G used: 2.6G (20%) fs: ext4 dev: /dev/sda3
           ID-3: /home size: 182G used: 26G (16%) fs: ext4 dev: /dev/sda5
           ID-4: swap-1 size: 18.00GB used: 0.00GB (0%) fs: swap dev: /dev/sda4
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 29.8C mobo: 27.8C
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 269 Uptime: 1:08 Memory: 2200.0/15933.2MB Init: systemd runlevel: 5 Gcc sys: 5.4.0
           Client: Shell (bash 4.3.481) inxi: 2.2.35 

Can somebody point me in the right direction about how to troubleshoot this? Your help is much appreciated. Thanks.

Best regards,
Phil

[deepakdeshp]

In drivers section are there additional drivers present for the displays? If so try using them reboot and test.

Or update kernel to highest version for 4.10 series. Reboot and test

[phz]

Hi, thanks for your reply. There are no additional drivers in the driver manager. In the meantime, I run kernel 4.13.0-26-generic.