Created attachment 136338 [details] X.Org X Server log With Linux 4.14.5, X.Org X Server 1.19.5, and the modesetting driver, the X server chooses 30 FPS by default despite 60 FPS being supported on the HiDPI/4K monitor Dell U2718Q connected over display port. ``` $ lspci -nn -s 0:02.0 00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 530 [8086:1912] (rev 06) $ xrandr Screen 0: minimum 320 x 200, current 3840 x 2160, maximum 8192 x 8192 HDMI-1 disconnected (normal left inverted right x axis y axis) DP-1 disconnected (normal left inverted right x axis y axis) HDMI-2 disconnected (normal left inverted right x axis y axis) DP-2 connected 3840x2160+0+0 (normal left inverted right x axis y axis) 609mm x 349mm 3840x2160 60.00 + 29.98* 2560x1440 59.95 2048x1280 59.99 1920x1200 59.88 2048x1080 24.00 1920x1080 60.00 60.00 50.00 59.94 24.00 23.98 1920x1080i 60.00 50.00 59.94 1600x1200 60.00 1600x900 60.00 1280x1024 75.02 60.02 1152x864 75.00 1280x720 60.00 50.00 59.94 1024x768 75.03 60.00 800x600 75.00 60.32 720x576 50.00 720x480 60.00 59.94 640x480 75.00 60.00 59.94 720x400 70.08 HDMI-3 disconnected (normal left inverted right x axis y axis) DP-3 disconnected (normal left inverted right x axis y axis) $ xrandr --output DP-2 --mode 3840x2160 -r 60 $ xrandr Screen 0: minimum 320 x 200, current 3840 x 2160, maximum 8192 x 8192 HDMI-1 disconnected (normal left inverted right x axis y axis) DP-1 disconnected (normal left inverted right x axis y axis) HDMI-2 disconnected (normal left inverted right x axis y axis) DP-2 connected 3840x2160+0+0 (normal left inverted right x axis y axis) 609mm x 349mm 3840x2160 60.00*+ 29.98 2560x1440 59.95 2048x1280 59.99 1920x1200 59.88 2048x1080 24.00 1920x1080 60.00 60.00 50.00 59.94 24.00 23.98 1920x1080i 60.00 50.00 59.94 1600x1200 60.00 1600x900 60.00 1280x1024 75.02 60.02 1152x864 75.00 1280x720 60.00 50.00 59.94 1024x768 75.03 60.00 800x600 75.00 60.32 720x576 50.00 720x480 60.00 59.94 640x480 75.00 60.00 59.94 720x400 70.08 HDMI-3 disconnected (normal left inverted right x axis y axis) DP-3 disconnected (normal left inverted right x axis y axis) ```
Hello Paul, Do you have identified any commit/kernel version where it was default 60FPS? Thank you.
(In reply to Elizabeth from comment #1) > Do you have identified any commit/kernel version where it was default 60FPS? I do not know, if the default was ever chosen. If you ask, why I think 60 FPS is the default, please look at the output of `xrandr`, which denotes the default with a `+`. By the way, here is a verbose output of `xrandr` (after manually changing to 60 FPS). ``` $ xrandr --verbose Screen 0: minimum 320 x 200, current 3840 x 2160, maximum 8192 x 8192 HDMI-1 disconnected (normal left inverted right x axis y axis) Identifier: 0x42 Timestamp: 231963119 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: 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 link-status: Good supported: Good, Bad DP-1 disconnected (normal left inverted right x axis y axis) Identifier: 0x43 Timestamp: 231963119 Subpixel: unknown Clones: HDMI-2 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 link-status: Good supported: Good, Bad HDMI-2 disconnected (normal left inverted right x axis y axis) Identifier: 0x44 Timestamp: 231963119 Subpixel: unknown Clones: DP-1 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 link-status: Good supported: Good, Bad DP-2 connected 3840x2160+0+0 (0x49) normal (normal left inverted right x axis y axis) 609mm x 349mm Identifier: 0x45 Timestamp: 231963119 Subpixel: unknown Gamma: 1.0:1.0:1.0 Brightness: 1.0 Clones: HDMI-3 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: 00ffffffffffff0010aceca04c314330 1e1b0104b53d23783eee95a3544c9926 0f5054a54b00714f8180a9c0a940d1c0 e100d10001014dd000a0f0703e803020 3500615d2100001a000000ff00464e38 344b3737543043314c0a000000fc0044 454c4c205532373138510a20000000fd 0031560a8936000a20202020202001ef 02031df150101f200514041312110302 161507060123091f0783010000565e00 a0a0a0295030203500615d2100001aa3 6600a0f0701f8030203500615d210000 1a4dd000a0f0703e8030203500615d21 00001a023a801871382d40582c250061 5d2100001ebf1600a08038134030203a 00615d2100001a00000000000000004a Broadcast RGB: Automatic supported: Automatic, Full, Limited 16:235 audio: auto supported: force-dvi, off, auto, on link-status: Good supported: Good, Bad 3840x2160 (0x49) 533.250MHz +HSync -VSync *current +preferred h: width 3840 start 3888 end 3920 total 4000 skew 0 clock 133.31KHz v: height 2160 start 2163 end 2168 total 2222 clock 60.00Hz 3840x2160 (0x4a) 262.750MHz +HSync -VSync h: width 3840 start 3888 end 3920 total 4000 skew 0 clock 65.69KHz v: height 2160 start 2163 end 2168 total 2191 clock 29.98Hz 2560x1440 (0x4b) 241.500MHz +HSync -VSync h: width 2560 start 2608 end 2640 total 2720 skew 0 clock 88.79KHz v: height 1440 start 1443 end 1448 total 1481 clock 59.95Hz 2048x1280 (0x4c) 221.277MHz -HSync +VSync h: width 2048 start 2192 end 2416 total 2784 skew 0 clock 79.48KHz v: height 1280 start 1281 end 1284 total 1325 clock 59.99Hz 1920x1200 (0x4d) 193.250MHz -HSync +VSync h: width 1920 start 2056 end 2256 total 2592 skew 0 clock 74.56KHz v: height 1200 start 1203 end 1209 total 1245 clock 59.88Hz 2048x1080 (0x4e) 58.230MHz +HSync -VSync h: width 2048 start 2096 end 2128 total 2208 skew 0 clock 26.37KHz v: height 1080 start 1083 end 1093 total 1099 clock 24.00Hz 1920x1080 (0x4f) 148.500MHz +HSync +VSync h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 67.50KHz v: height 1080 start 1082 end 1087 total 1125 clock 60.00Hz 1920x1080 (0x50) 148.500MHz +HSync +VSync 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 (0x51) 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 (0x52) 148.352MHz +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 1920x1080i (0x53) 74.250MHz +HSync +VSync Interlace h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 33.75KHz v: height 1080 start 1084 end 1094 total 1125 clock 60.00Hz 1920x1080i (0x54) 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 1125 clock 50.00Hz 1920x1080 (0x55) 74.250MHz +HSync +VSync h: width 1920 start 2558 end 2602 total 2750 skew 0 clock 27.00KHz v: height 1080 start 1084 end 1089 total 1125 clock 24.00Hz 1920x1080i (0x56) 74.176MHz +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 1125 clock 59.94Hz 1920x1080 (0x57) 74.176MHz +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 23.98Hz 1600x1200 (0x58) 162.000MHz +HSync +VSync h: width 1600 start 1664 end 1856 total 2160 skew 0 clock 75.00KHz v: height 1200 start 1201 end 1204 total 1250 clock 60.00Hz 1600x900 (0x59) 108.000MHz +HSync +VSync h: width 1600 start 1624 end 1704 total 1800 skew 0 clock 60.00KHz v: height 900 start 901 end 904 total 1000 clock 60.00Hz 1280x1024 (0x5a) 135.000MHz +HSync +VSync h: width 1280 start 1296 end 1440 total 1688 skew 0 clock 79.98KHz v: height 1024 start 1025 end 1028 total 1066 clock 75.02Hz 1280x1024 (0x5b) 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 1152x864 (0x5c) 108.000MHz +HSync +VSync h: width 1152 start 1216 end 1344 total 1600 skew 0 clock 67.50KHz v: height 864 start 865 end 868 total 900 clock 75.00Hz 1280x720 (0x5d) 74.250MHz +HSync +VSync h: width 1280 start 1390 end 1430 total 1650 skew 0 clock 45.00KHz v: height 720 start 725 end 730 total 750 clock 60.00Hz 1280x720 (0x5e) 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 1280x720 (0x5f) 74.176MHz +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 1024x768 (0x60) 78.750MHz +HSync +VSync h: width 1024 start 1040 end 1136 total 1312 skew 0 clock 60.02KHz v: height 768 start 769 end 772 total 800 clock 75.03Hz 1024x768 (0x61) 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 (0x62) 49.500MHz +HSync +VSync h: width 800 start 816 end 896 total 1056 skew 0 clock 46.88KHz v: height 600 start 601 end 604 total 625 clock 75.00Hz 800x600 (0x63) 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 (0x64) 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 (0x65) 27.027MHz -HSync -VSync h: width 720 start 736 end 798 total 858 skew 0 clock 31.50KHz v: height 480 start 489 end 495 total 525 clock 60.00Hz 720x480 (0x66) 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 (0x67) 31.500MHz -HSync -VSync h: width 640 start 656 end 720 total 840 skew 0 clock 37.50KHz v: height 480 start 481 end 484 total 500 clock 75.00Hz 640x480 (0x68) 25.200MHz -HSync -VSync h: width 640 start 656 end 752 total 800 skew 0 clock 31.50KHz v: height 480 start 490 end 492 total 525 clock 60.00Hz 640x480 (0x69) 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 720x400 (0x6a) 28.320MHz -HSync +VSync h: width 720 start 738 end 846 total 900 skew 0 clock 31.47KHz v: height 400 start 412 end 414 total 449 clock 70.08Hz HDMI-3 disconnected (normal left inverted right x axis y axis) Identifier: 0x46 Timestamp: 231963119 Subpixel: unknown Clones: DP-2 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 link-status: Good supported: Good, Bad DP-3 disconnected (normal left inverted right x axis y axis) Identifier: 0x47 Timestamp: 231963119 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 link-status: Good supported: Good, Bad ```
Possibly related to https://bugzilla.kernel.org/show_bug.cgi?id=198241
Strangest thing, logging into awesome WM 60 Hz is chosen, logging into Xfce 4.12 29.98 Hz is chosen.
Hello Paul, if you have the chance, could you try patch suggested in https://bugs.freedesktop.org/show_bug.cgi?id=103497#c8, with latest stable or tip?? https://www.kernel.org https://cgit.freedesktop.org/drm-tip
Elisabeth, I didn’t try the patch, because I am unable to reproduce the issue with 4.14.10 and 4.14.11. Does somebody know of changes between 4.14.8 and 4.14.10, that could have fixed the issue?
(In reply to Paul Menzel from comment #6) > Elisabeth, I didn’t try the patch, because I am unable to reproduce the > issue with 4.14.10 and 4.14.11. I'm afraid the patch is irrelevant here anyway. > Does somebody know of changes between 4.14.8 and 4.14.10, that could have > fixed the issue? Not that I can tell. There's one potential LSPCON fix, but we don't even know if you have one here. Please attach dmesg with drm.debug=14 all the way from boot to get some details what you actually have.
First of all. Sorry about spam. This is mass update for our bugs. Sorry if you feel this annoying but with this trying to understand if bug still valid or not. If bug investigation still in progress, please ignore this and I apologize! If you think this is not anymore valid, please comment to the bug that can be closed. If you haven't tested with our latest pre-upstream tree(drm-tip), can you do that also to see if issue is valid there still and if you cannot see issue there, please comment to the bug.
Closing, Paul, please re-open if still occurs.
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