[Shield Tablet Q&A, Help & Troubleshooting] minio.cz:
Hi all,

I had K1 tablet with 1.3 update and used HDMI together with Secondscreen app to change DPI and output the screen on my 1920x1200 monitor. Today I updated to nougat rerooted it and plugged it to the monitor. Butt now whatever I do the monitor says that the input is 1080p, picture is squished and I have black bars on the side of the screen, while on tablet itself it looks ok. When I set output to 1080p it works OK but does not match monitor native resolution. I would not care if it was for games or movies, but I also use it for editing documents which now look weird. Please, does anyone have idea what could be the problem?

Edit: OK it seems that tablet thinks the monitor is 1080p. Notebook sees it correctly. Do not know why.

Edit2: Ok so tablet sees that the monitor can do 1920x1200, but decides that 1920x1080 is better... Here is what I found in log...

02-11 20:45:17.243 789 875 D Tchnoise: #### HDMI IN mode
02-11 20:45:17.243 789 875 D Tchnoise: #### HDMI IN mode
02-11 20:45:17.243 755 889 I hwcomposer: hotplug: connected = 1
02-11 20:45:17.243 1202 1853 I TegraHDMICEC: hotplug display 1 connected 1
02-11 20:45:17.244 755 889 I hwcomposer: edid: Manufacturer ID: "HWP"
02-11 20:45:17.244 755 889 I hwcomposer: edid: Manufacturer Product Code: 26f8
02-11 20:45:17.244 755 889 I hwcomposer: edid: Monitor name: "HP LP2475w"
02-11 20:45:17.244 755 889 D hwcomposer: Display 1 has RGB quant selectable: 0, YUV quant selectable: 0
02-11 20:45:17.244 755 889 D hwcomposer: Display 1 HDR capabilities: 0
02-11 20:45:17.244 755 889 D hwcomposer: Display 1: found 31 modes
02-11 20:45:17.244 755 889 W hwcomposer: New DC mode 1920 x 1200 @ 60.00 Hz (RGB/8/Rec.709/limited)
02-11 20:45:17.244 755 889 W hwcomposer: New DC mode 720 x 400 @ 70.00 Hz (RGB/8/Rec.709/adj/limited)
02-11 20:45:17.244 755 889 W hwcomposer: New DC mode 640 x 480 @ 60.00 Hz (RGB/8/Rec.709/limited)
02-11 20:45:17.244 755 889 W hwcomposer: New DC mode 640 x 480 @ 75.00 Hz (RGB/8/Rec.709/adj/limited)
02-11 20:45:17.244 755 889 W hwcomposer: New DC mode 800 x 600 @ 60.00 Hz (RGB/8/Rec.709/adj/limited)
02-11 20:45:17.244 755 889 W hwcomposer: New DC mode 800 x 600 @ 75.00 Hz (RGB/8/Rec.709/adj/limited)
02-11 20:45:17.244 755 889 W hwcomposer: New DC mode 832 x 624 @ 75.00 Hz (RGB/8/Rec.709/adj/limited)
02-11 20:45:17.244 755 889 W hwcomposer: New DC mode 1024 x 768 @ 60.00 Hz (RGB/8/Rec.709/limited)
02-11 20:45:17.245 755 889 W hwcomposer: New DC mode 1024 x 768 @ 75.00 Hz (RGB/8/Rec.709/adj/limited)
02-11 20:45:17.245 755 889 W hwcomposer: New DC mode 1280 x 1024 @ 75.00 Hz (RGB/8/Rec.709/adj/limited)
02-11 20:45:17.245 755 889 W hwcomposer: New DC mode 1152 x 864 @ 75.00 Hz (RGB/8/Rec.709/adj/limited)
02-11 20:45:17.245 755 889 W hwcomposer: New DC mode 1280 x 960 @ 60.00 Hz (RGB/8/Rec.709/adj/limited)
02-11 20:45:17.245 755 889 W hwcomposer: New DC mode 1600 x 1000 @ 60.00 Hz (RGB/8/Rec.709/adj/limited)
02-11 20:45:17.245 755 889 W hwcomposer: New DC mode 1600 x 1200 @ 60.00 Hz (RGB/8/Rec.709/adj/limited)
02-11 20:45:17.245 755 889 W hwcomposer: New DC mode 1680 x 1050 @ 60.00 Hz (RGB/8/Rec.709/limited)
02-11 20:45:17.245 755 889 W hwcomposer: New DC mode 1920 x 1200 @ 60.00 Hz (RGB/8/Rec.709/limited)
02-11 20:45:17.245 755 889 D hwcomposer: Skipping interlaced mode (1920 x 1080 @ 30.00)
02-11 20:45:17.245 755 889 D hwcomposer: Skipping interlaced mode (1920 x 1080 @ 25.00)
02-11 20:45:17.245 755 889 W hwcomposer: New DC mode 1280 x 720 @ 60.00 Hz (RGB/8/Rec.709/limited)
02-11 20:45:17.245 755 889 W hwcomposer: New DC mode 1280 x 720 @ 50.00 Hz (RGB/8/Rec.709/limited)
02-11 20:45:17.245 755 889 W hwcomposer: New DC mode 640 x 480 @ 60.00 Hz (RGB/8/Rec.709/cea/limited)
02-11 20:45:17.245 755 889 W hwcomposer: New DC mode 720 x 480 @ 60.00 Hz (RGB/8/Rec.709/cea/limited)
02-11 20:45:17.245 755 889 W hwcomposer: New DC mode 1280 x 720 @ 60.00 Hz (RGB/8/Rec.709/cea/limited)
02-11 20:45:17.245 755 889 D hwcomposer: Skipping interlaced mode (1920 x 1080 @ 31.00)
02-11 20:45:17.246 755 889 D hwcomposer: Skipping interlaced mode (1440 x 480 @ 31.00)
02-11 20:45:17.246 755 889 W hwcomposer: New DC mode 1920 x 1080 @ 60.00 Hz (RGB/8/Rec.709/cea/limited)
02-11 20:45:17.246 755 889 W hwcomposer: New DC mode 720 x 576 @ 50.00 Hz (RGB/8/Rec.709/cea/limited)
02-11 20:45:17.246 755 889 W hwcomposer: New DC mode 1280 x 720 @ 50.00 Hz (RGB/8/Rec.709/cea/limited)
02-11 20:45:17.246 755 889 D hwcomposer: Skipping interlaced mode (1920 x 1080 @ 26.00)
02-11 20:45:17.246 755 889 D hwcomposer: Skipping interlaced mode (1440 x 576 @ 26.00)
02-11 20:45:17.246 755 889 W hwcomposer: New DC mode 1920 x 1080 @ 50.00 Hz (RGB/8/Rec.709/cea/limited)
02-11 20:45:17.246 755 889 D hwcomposer: Chosen mode: 21: 1920 x 1080 @ 60.00 Hz (RGB/8/Rec.709/cea)
02-11 20:45:17.246 755 889 W hwcomposer: New DC mode 1920 x 1080 @ 60.00 Hz (RGB/8/Rec.709/cea/limited)
02-11 20:45:17.246 755 889 D hwcomposer: display type 1: vblank period = 16666667 ns
02-11 20:45:17.247 755 889 D hwcomposer: Display 1 layer size is 0 x 0
02-11 20:45:17.247 755 889 D hwcomposer: int hwc_hotplug(void*, int, nvfb_hotplug_status): display 1 connected
02-11 20:45:17.247 755 889 D hwcomposer: void hwc_blank_display(nvhwc_context*, int, int): display 1: [1 -> 0]
02-11 20:45:17.247 755 889 D hwcomposer: Display 1 layer size is 1920 x 1080
02-11 20:45:17.247 755 889 D hwcomposer: Display 1 device size is 1920 x 1080
02-11 20:45:17.247 755 889 D hwcomposer: Display 1 device clip is (0, 0, 1920, 1080)
02-11 20:45:17.247 755 889 D hwcomposer: int hwc_getDisplayConfigs(hwc_composer_device_1*, int, uint32_t*, size_t*): disp 1: returning 25 configs