<div dir="ltr">I was experiencing tearing on my Debian system. I read about the intel driver "TearFree" option and configured it as explained here: <a href="https://wiki.archlinux.org/index.php/Intel_graphics#Tearing">https://wiki.archlinux.org/index.php/Intel_graphics#Tearing</a> While it does seem to help with the tearing, it changes my detected screens. By this I mean if I run xrandr, my display ports have a different name and the detected screens have a different EDID (model/vendor), different resolutions etc. This is the xrandr output without the intel configuration file: ``` Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 16384 x 16384 DVI-I-0 disconnected primary (normal left inverted right x axis y axis) Identifier: 0x2de Timestamp: 113294 Subpixel: unknown Clones: CRTCs: 0 1 2 3 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 BorderDimensions: 4 supported: 4 Border: 0 0 0 0 range: (0, 65535) SignalFormat: VGA supported: VGA ConnectorType: DVI-I ConnectorNumber: 0 _ConnectorLocation: 0 DVI-I-1 disconnected (normal left inverted right x axis y axis) Identifier: 0x2df Timestamp: 113294 Subpixel: unknown Clones: CRTCs: 0 1 2 3 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 BorderDimensions: 4 supported: 4 Border: 0 0 0 0 range: (0, 65535) SignalFormat: TMDS supported: TMDS ConnectorType: DVI-I ConnectorNumber: 0 _ConnectorLocation: 0 DP-0 disconnected (normal left inverted right x axis y axis) Identifier: 0x2e0 Timestamp: 113294 Subpixel: unknown Clones: CRTCs: 0 1 2 3 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 BorderDimensions: 4 supported: 4 Border: 0 0 0 0 range: (0, 65535) SignalFormat: TMDS supported: TMDS ConnectorType: DisplayPort ConnectorNumber: 2 _ConnectorLocation: 2 DP-1 connected 1920x1080+0+0 (0x2f4) normal (normal left inverted right x axis y axis) 0mm x 0mm Identifier: 0x2e1 Timestamp: 113294 Subpixel: unknown Gamma: 1.0:1.0:1.0 Brightness: 1.0 Clones: CRTC: 0 CRTCs: 0 1 2 3 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: EDID: 00ffffffffffff004249696301000000 08190103800000780acf74a3574cb023 09484c21080081804540614095000101 010101010101023a801871382d40582c 4500c48e2100001e662150b051001b30 40703600c48e2100001e000000fc004c 45442d4d4f4e49544f520a20000000fd 00324b1e5017000a20202020202001a9 02032cf24d010304050790121314169f 202226090707111750830100006e030c 001000b844200080010203048c0ad08a 20e02d10103e9600c48e210000188c0a d090204031200c405500c48e21000018 011d00bc52d01e20b8285540c48e2100 001e011d80d0721c1620102c2580c48e 2100009e00000000000000000000007d CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 BorderDimensions: 4 supported: 4 Border: 0 0 0 0 range: (0, 65535) SignalFormat: TMDS supported: TMDS ConnectorType: DisplayPort ConnectorNumber: 1 _ConnectorLocation: 1 1920x1080 (0x2f4) 148.500MHz +HSync +VSync *current +preferred h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 67.50KHz v: height 1080 start 1084 end 1089 total 1125 clock 60.00Hz 1920x1080 (0x2f5) 148.350MHz +HSync +VSync h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 67.43KHz v: height 1080 start 1084 end 1089 total 1125 clock 59.94Hz 1920x1080 (0x2f6) 148.500MHz +HSync +VSync h: width 1920 start 2448 end 2492 total 2640 skew 0 clock 56.25KHz v: height 1080 start 1084 end 1089 total 1125 clock 50.00Hz 1920x1080 (0x2f7) 74.180MHz +HSync +VSync h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 33.72KHz v: height 1080 start 1084 end 1089 total 1125 clock 29.97Hz 1920x1080 (0x2f8) 74.160MHz +HSync +VSync h: width 1920 start 2558 end 2602 total 2750 skew 0 clock 26.97KHz v: height 1080 start 1084 end 1089 total 1125 clock 23.97Hz 1920x1080 (0x2f9) 74.180MHz +HSync +VSync Interlace h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 33.72KHz v: height 1080 start 1084 end 1094 total 1124 clock 60.00Hz 1920x1080 (0x2fa) 74.250MHz +HSync +VSync Interlace h: width 1920 start 2448 end 2492 total 2640 skew 0 clock 28.12KHz v: height 1080 start 1084 end 1094 total 1124 clock 50.04Hz 1440x900 (0x2fb) 106.500MHz -HSync +VSync h: width 1440 start 1520 end 1672 total 1904 skew 0 clock 55.93KHz v: height 900 start 903 end 909 total 934 clock 59.89Hz 1360x768 (0x2fc) 85.500MHz +HSync +VSync h: width 1360 start 1424 end 1536 total 1792 skew 0 clock 47.71KHz v: height 768 start 771 end 777 total 795 clock 60.02Hz 1280x1024 (0x2fd) 108.000MHz +HSync +VSync h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 63.98KHz v: height 1024 start 1025 end 1028 total 1066 clock 60.02Hz 1280x720 (0x2fe) 74.180MHz +HSync +VSync h: width 1280 start 1390 end 1430 total 1650 skew 0 clock 44.96KHz v: height 720 start 725 end 730 total 750 clock 59.94Hz 1280x720 (0x2ff) 74.250MHz +HSync +VSync h: width 1280 start 1720 end 1760 total 1980 skew 0 clock 37.50KHz v: height 720 start 725 end 730 total 750 clock 50.00Hz 1024x768 (0x300) 65.000MHz -HSync -VSync h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.36KHz v: height 768 start 771 end 777 total 806 clock 60.00Hz 800x600 (0x301) 40.000MHz +HSync +VSync h: width 800 start 840 end 968 total 1056 skew 0 clock 37.88KHz v: height 600 start 601 end 605 total 628 clock 60.32Hz 720x576 (0x302) 27.000MHz -HSync -VSync h: width 720 start 732 end 796 total 864 skew 0 clock 31.25KHz v: height 576 start 581 end 586 total 625 clock 50.00Hz 720x480 (0x303) 27.000MHz -HSync -VSync h: width 720 start 736 end 798 total 858 skew 0 clock 31.47KHz v: height 480 start 489 end 495 total 525 clock 59.94Hz 640x480 (0x304) 25.175MHz -HSync -VSync h: width 640 start 656 end 752 total 800 skew 0 clock 31.47KHz v: height 480 start 490 end 492 total 525 clock 59.94Hz 640x480 (0x305) 25.170MHz -HSync -VSync h: width 640 start 656 end 752 total 800 skew 0 clock 31.46KHz v: height 480 start 490 end 492 total 525 clock 59.93Hz DP-2 disconnected (normal left inverted right x axis y axis) Identifier: 0x2e2 Timestamp: 113294 Subpixel: unknown Clones: CRTCs: 0 1 2 3 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 BorderDimensions: 4 supported: 4 Border: 0 0 0 0 range: (0, 65535) SignalFormat: DisplayPort supported: DisplayPort ConnectorType: DisplayPort ConnectorNumber: 2 _ConnectorLocation: 2 DP-3 disconnected (normal left inverted right x axis y axis) Identifier: 0x2e3 Timestamp: 113294 Subpixel: unknown Clones: CRTCs: 0 1 2 3 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 BorderDimensions: 4 supported: 4 Border: 0 0 0 0 range: (0, 65535) SignalFormat: DisplayPort supported: DisplayPort ConnectorType: DisplayPort ConnectorNumber: 1 _ConnectorLocation: 1 ``` This is the xrandr output with the intel configuration file: ``` Screen 0: minimum 8 x 8, current 1920 x 1200, maximum 32767 x 32767 DP1 disconnected primary (normal left inverted right x axis y axis) Identifier: 0x43 Timestamp: 14646 Subpixel: unknown Clones: CRTCs: 0 1 2 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: Broadcast RGB: Automatic supported: Automatic, Full, Limited 16:235 audio: auto supported: force-dvi, off, auto, on DP2 disconnected (normal left inverted right x axis y axis) Identifier: 0x44 Timestamp: 14646 Subpixel: unknown Clones: CRTCs: 0 1 2 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: Broadcast RGB: Automatic supported: Automatic, Full, Limited 16:235 audio: auto supported: force-dvi, off, auto, on DP3 connected 1920x1200+0+0 (0x4c) normal (normal left inverted right x axis y axis) 0mm x 0mm Identifier: 0x45 Timestamp: 14646 Subpixel: unknown Gamma: 1.0:1.0:1.0 Brightness: 1.0 Clones: CRTC: 0 CRTCs: 0 1 2 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: EDID: 00ffffffffffff000d12117570030000 15150104a5000078e28042ac5130b425 10505300000001010101010101010101 010101010101283c80a070b023403020 360007442100001a213280a070b02340 3020360007442100001a000000fd0038 4c1e5311000a202020202020000000fc 00434837353131420a20202020200012 Broadcast RGB: Automatic supported: Automatic, Full, Limited 16:235 audio: auto supported: force-dvi, off, auto, on 1920x1200 (0x4c) 154.000MHz +HSync -VSync *current +preferred h: width 1920 start 1968 end 2000 total 2080 skew 0 clock 74.04KHz v: height 1200 start 1203 end 1209 total 1235 clock 59.95Hz 1920x1200 (0x83) 128.330MHz +HSync -VSync h: width 1920 start 1968 end 2000 total 2080 skew 0 clock 61.70KHz v: height 1200 start 1203 end 1209 total 1235 clock 49.96Hz HDMI1 disconnected (normal left inverted right x axis y axis) Identifier: 0x46 Timestamp: 14646 Subpixel: unknown Clones: VGA1 CRTCs: 0 1 2 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: aspect ratio: Automatic supported: Automatic, 4:3, 16:9 Broadcast RGB: Automatic supported: Automatic, Full, Limited 16:235 audio: auto supported: force-dvi, off, auto, on HDMI2 disconnected (normal left inverted right x axis y axis) Identifier: 0x47 Timestamp: 14646 Subpixel: unknown Clones: VGA1 CRTCs: 0 1 2 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: aspect ratio: Automatic supported: Automatic, 4:3, 16:9 Broadcast RGB: Automatic supported: Automatic, Full, Limited 16:235 audio: auto supported: force-dvi, off, auto, on HDMI3 disconnected (normal left inverted right x axis y axis) Identifier: 0x48 Timestamp: 14646 Subpixel: unknown Clones: VGA1 CRTCs: 0 1 2 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: aspect ratio: Automatic supported: Automatic, 4:3, 16:9 Broadcast RGB: Automatic supported: Automatic, Full, Limited 16:235 audio: auto supported: force-dvi, off, auto, on VGA1 disconnected (normal left inverted right x axis y axis) Identifier: 0x49 Timestamp: 14646 Subpixel: unknown Clones: HDMI1 HDMI2 HDMI3 CRTCs: 0 1 2 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: VIRTUAL1 disconnected (normal left inverted right x axis y axis) Identifier: 0x4a Timestamp: 14646 Subpixel: no subpixels Clones: CRTCs: 3 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: ``` I tested this on multiple machines and on both Debian 9 and 10 (with X11, not wayland). Is this a bug, or why does this happen? </div>