How to set the right screen resolution without xrandr

DP-3 connected 1280x800+1920+0 (0x236) normal (normal left inverted right x axis y axis) 0mm x 0mm Identifier: 0x1de Timestamp: 318276 Subpixel: unknown Gamma: 1.0:1.0:1.0 Brightness: 1.0 Clones: CRTC: 1 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: CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 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 non-desktop: 0 supported: 0, 1 1024x768 (0x1d1) 65.000MHz -HSync -VSync +preferred 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 1600x900 (0x230) 97.500MHz +HSync -VSync h: width 1600 start 1648 end 1680 total 1760 skew 0 clock 55.40KHz v: height 900 start 903 end 908 total 926 clock 59.82Hz 1400x900 (0x231) 86.500MHz +HSync -VSync h: width 1400 start 1448 end 1480 total 1560 skew 0 clock 55.45KHz v: height 900 start 903 end 913 total 926 clock 59.88Hz 1368x768 (0x232) 85.250MHz -HSync +VSync h: width 1368 start 1440 end 1576 total 1784 skew 0 clock 47.79KHz v: height 768 start 771 end 781 total 798 clock 59.88Hz 1368x768 (0x233) 72.250MHz +HSync -VSync h: width 1368 start 1416 end 1448 total 1528 skew 0 clock 47.28KHz v: height 768 start 771 end 781 total 790 clock 59.85Hz 1360x768 (0x234) 72.000MHz +HSync -VSync h: width 1360 start 1408 end 1440 total 1520 skew 0 clock 47.37KHz v: height 768 start 771 end 781 total 790 clock 59.96Hz 1360x768 (0x235) 84.750MHz -HSync +VSync h: width 1360 start 1432 end 1568 total 1776 skew 0 clock 47.72KHz v: height 768 start 771 end 781 total 798 clock 59.80Hz 1280x800 (0x236) 71.000MHz +HSync -VSync *current h: width 1280 start 1328 end 1360 total 1440 skew 0 clock 49.31KHz v: height 800 start 803 end 809 total 823 clock 59.91Hz 1280x800 (0x1ca) 83.500MHz -HSync +VSync h: width 1280 start 1352 end 1480 total 1680 skew 0 clock 49.70KHz v: height 800 start 803 end 809 total 831 clock 59.81Hz 1280x720 (0x237) 74.500MHz -HSync +VSync h: width 1280 start 1344 end 1472 total 1664 skew 0 clock 44.77KHz v: height 720 start 723 end 728 total 748 clock 59.86Hz 1280x720 (0x238) 63.750MHz +HSync -VSync h: width 1280 start 1328 end 1360 total 1440 skew 0 clock 44.27KHz v: height 720 start 723 end 728 total 741 clock 59.74Hz 1152x864 (0x239) 81.620MHz -HSync +VSync h: width 1152 start 1216 end 1336 total 1520 skew 0 clock 53.70KHz v: height 864 start 865 end 868 total 895 clock 60.00Hz 1024x576 (0x23a) 46.500MHz -HSync +VSync h: width 1024 start 1064 end 1160 total 1296 skew 0 clock 35.88KHz v: height 576 start 579 end 584 total 599 clock 59.90Hz 1024x576 (0x23b) 42.000MHz +HSync -VSync h: width 1024 start 1072 end 1104 total 1184 skew 0 clock 35.47KHz v: height 576 start 579 end 584 total 593 clock 59.82Hz 960x540 (0x23c) 37.250MHz +HSync -VSync h: width 960 start 1008 end 1040 total 1120 skew 0 clock 33.26KHz v: height 540 start 543 end 548 total 556 clock 59.82Hz 960x540 (0x23d) 40.750MHz -HSync +VSync h: width 960 start 992 end 1088 total 1216 skew 0 clock 33.51KHz v: height 540 start 543 end 548 total 562 clock 59.63Hz 864x486 (0x23e) 32.500MHz -HSync +VSync h: width 864 start 888 end 968 total 1072 skew 0 clock 30.32KHz v: height 486 start 489 end 494 total 506 clock 59.92Hz 864x486 (0x23f) 30.500MHz +HSync -VSync h: width 864 start 912 end 944 total 1024 skew 0 clock 29.79KHz v: height 486 start 489 end 494 total 500 clock 59.57Hz 800x600 (0x1d3) 50.000MHz +HSync +VSync h: width 800 start 856 end 976 total 1040 skew 0 clock 48.08KHz v: height 600 start 637 end 643 total 666 clock 72.19Hz 800x600 (0x1d4) 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 800x600 (0x1d5) 36.000MHz +HSync +VSync h: width 800 start 824 end 896 total 1024 skew 0 clock 35.16KHz v: height 600 start 601 end 603 total 625 clock 56.25Hz 800x450 (0x240) 48.750MHz +HSync -VSync DoubleScan h: width 800 start 824 end 840 total 880 skew 0 clock 55.40KHz v: height 450 start 451 end 454 total 463 clock 59.82Hz 700x450 (0x241) 43.250MHz +HSync -VSync DoubleScan h: width 700 start 724 end 740 total 780 skew 0 clock 55.45KHz v: height 450 start 451 end 456 total 463 clock 59.88Hz 684x384 (0x242) 42.625MHz -HSync +VSync DoubleScan h: width 684 start 720 end 788 total 892 skew 0 clock 47.79KHz v: height 384 start 385 end 390 total 399 clock 59.88Hz 684x384 (0x243) 36.125MHz +HSync -VSync DoubleScan h: width 684 start 708 end 724 total 764 skew 0 clock 47.28KHz v: height 384 start 385 end 390 total 395 clock 59.85Hz 680x384 (0x244) 36.000MHz +HSync -VSync DoubleScan h: width 680 start 704 end 720 total 760 skew 0 clock 47.37KHz v: height 384 start 385 end 390 total 395 clock 59.96Hz 680x384 (0x245) 42.375MHz -HSync +VSync DoubleScan h: width 680 start 716 end 784 total 888 skew 0 clock 47.72KHz v: height 384 start 385 end 390 total 399 clock 59.80Hz 640x480 (0x1da) 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 640x400 (0x246) 35.500MHz +HSync -VSync DoubleScan h: width 640 start 664 end 680 total 720 skew 0 clock 49.31KHz v: height 400 start 401 end 404 total 411 clock 59.98Hz 640x400 (0x247) 41.750MHz -HSync +VSync DoubleScan h: width 640 start 676 end 740 total 840 skew 0 clock 49.70KHz v: height 400 start 401 end 404 total 415 clock 59.88Hz 640x360 (0x248) 37.250MHz -HSync +VSync DoubleScan h: width 640 start 672 end 736 total 832 skew 0 clock 44.77KHz v: height 360 start 361 end 364 total 374 clock 59.86Hz 640x360 (0x249) 31.875MHz +HSync -VSync DoubleScan h: width 640 start 664 end 680 total 720 skew 0 clock 44.27KHz v: height 360 start 361 end 364 total 370 clock 59.83Hz 512x384 (0x24a) 32.500MHz -HSync -VSync DoubleScan h: width 512 start 524 end 592 total 672 skew 0 clock 48.36KHz v: height 384 start 385 end 388 total 403 clock 60.00Hz 512x288 (0x24b) 23.250MHz -HSync +VSync DoubleScan h: width 512 start 532 end 580 total 648 skew 0 clock 35.88KHz v: height 288 start 289 end 292 total 299 clock 60.00Hz 512x288 (0x24c) 21.000MHz +HSync -VSync DoubleScan h: width 512 start 536 end 552 total 592 skew 0 clock 35.47KHz v: height 288 start 289 end 292 total 296 clock 59.92Hz 480x270 (0x24d) 18.625MHz +HSync -VSync DoubleScan h: width 480 start 504 end 520 total 560 skew 0 clock 33.26KHz v: height 270 start 271 end 274 total 278 clock 59.82Hz 480x270 (0x24e) 20.375MHz -HSync +VSync DoubleScan h: width 480 start 496 end 544 total 608 skew 0 clock 33.51KHz v: height 270 start 271 end 274 total 281 clock 59.63Hz 432x243 (0x24f) 16.250MHz -HSync +VSync DoubleScan h: width 432 start 444 end 484 total 536 skew 0 clock 30.32KHz v: height 243 start 244 end 247 total 253 clock 59.92Hz 432x243 (0x250) 15.250MHz +HSync -VSync DoubleScan h: width 432 start 456 end 472 total 512 skew 0 clock 29.79KHz v: height 243 start 244 end 247 total 250 clock 59.57Hz 400x300 (0x251) 25.000MHz +HSync +VSync DoubleScan h: width 400 start 428 end 488 total 520 skew 0 clock 48.08KHz v: height 300 start 318 end 321 total 333 clock 72.19Hz 320x240 (0x252) 12.587MHz -HSync -VSync DoubleScan h: width 320 start 328 end 376 total 400 skew 0 clock 31.47KHz v: height 240 start 245 end 246 total 262 clock 60.05Hz

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