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<body><span class="vcard"><a class="email" href="mailto:pmenzel+bugs.freedesktop@molgen.mpg.de" title="Paul Menzel <pmenzel+bugs.freedesktop@molgen.mpg.de>"> <span class="fn">Paul Menzel</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL] Glitches with HiDPI monitor"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103768">bug 103768</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">CC</td>
<td>
</td>
<td>pmenzel+bugs.freedesktop@molgen.mpg.de
</td>
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<p>
<div>
<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL] Glitches with HiDPI monitor"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103768#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL] Glitches with HiDPI monitor"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103768">bug 103768</a>
from <span class="vcard"><a class="email" href="mailto:pmenzel+bugs.freedesktop@molgen.mpg.de" title="Paul Menzel <pmenzel+bugs.freedesktop@molgen.mpg.de>"> <span class="fn">Paul Menzel</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=135545" name="attach_135545" title="Linux 4.14 message with `drm.debug=0x1e log_buf_len=5M` (DP 1.2 in monitor enabled)">attachment 135545</a> <a href="attachment.cgi?id=135545&action=edit" title="Linux 4.14 message with `drm.debug=0x1e log_buf_len=5M` (DP 1.2 in monitor enabled)">[details]</a></span>
Linux 4.14 message with `drm.debug=0x1e log_buf_len=5M` (DP 1.2 in monitor
enabled)
Ok, Aaron’s answer in the thread *Can't enable 60hz with display (Dell
UP2414Q)* for Nvidia gave the right clue.
<span class="quote">> You have to drive the monitor in MST mode to get 60 Hz.</span >
It turns out, that DP 1.2 was disabled in the monitor menu. Now, 60 Hz are
detected.
Unfortunately, with GDM and Xfce 4.12, I have the same problem, that this is
treated as two monitors.
```
$ xrandr
[…]
DP-2-8 connected 1920x2160+1920+0 (normal left inverted right x axis y axis)
698mm x 392mm
1920x2160 60.0*+
DP-2-9 connected 1920x2160+0+0 (normal left inverted right x axis y axis) 698mm
x 392mm
1920x2160 60.0*+
1920x1200 59.9
1920x1080 60.0
1600x1200 60.0
1680x1050 60.0
1280x1024 75.0 60.0
1280x800 59.8
1152x864 75.0
1024x768 75.0 60.0
800x600 75.0 60.3
640x480 75.0 59.9
720x400 70.1
```
Aaron also answered that in the forum thread [1].
<span class="quote">> Tiled displays are a problem for RandR. I started a thread with the X.Org
> community about how we want to deal with them. Due to how the RandR protocol
> is designed, it's impossible to cleanly represent these things in a way that
> won't confuse at least some applications.</span >
>
<span class="quote">> <a href="http://marc.info/?l=freedesktop-xorg-devel&m=138989953919169&w=2">http://marc.info/?l=freedesktop-xorg-devel&m=138989953919169&w=2</a></span >
[1]
<a href="https://devtalk.nvidia.com/default/topic/681356/linux/can-t-enable-60hz-with-display-dell-up2414q-/">https://devtalk.nvidia.com/default/topic/681356/linux/can-t-enable-60hz-with-display-dell-up2414q-/</a>
```
$ 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: 22095
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: 22095
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: 22095
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 disconnected (normal left inverted right x axis y axis)
Identifier: 0x45
Timestamp: 22095
Subpixel: unknown
Clones: HDMI-3
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-3 disconnected (normal left inverted right x axis y axis)
Identifier: 0x46
Timestamp: 22095
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: 22095
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
DP-2-8 connected 1920x2160+1920+0 (0x4b) normal (normal left inverted right x
axis y axis) 698mm x 392mm
Identifier: 0x48
Timestamp: 22095
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:
TILE: 1 0 1 0 2 0 1 0
EDID:
00ffffffffffff0010ac934050313031
24180104b54627783a73e0a35336b626
0d515300000001010101010101010101
0101010101014d6c80a070703e803020
3a00ba882100001a000000ff004b3352
3930343934313031500a000000fc0044
454c4c20555033323134510a000000fd
001d4b1f8c1e000a2020202020200121
7012790000120016821010007f076f08
000000000044454c9340503130310000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000002490
link-status: Good
supported: Good, Bad
1920x2160 (0x4b) 277.2MHz +HSync -VSync *current +preferred
h: width 1920 start 1968 end 2000 total 2080 skew 0 clock 133.3KHz
v: height 2160 start 2163 end 2173 total 2222 clock 60.0Hz
DP-2-9 connected 1920x2160+0+0 (0x4b) normal (normal left inverted right x axis
y axis) 698mm x 392mm
Identifier: 0x49
Timestamp: 22095
Subpixel: unknown
Gamma: 1.0:1.0:1.0
Brightness: 1.0
Clones:
CRTC: 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:
TILE: 1 0 1 0 2 0 1 0
EDID:
00ffffffffffff0010ac934050313031
24180104b54627783a73e0a35336b626
0d5153a54b008100b300d100714fa940
8180d1c001014d6c80a070703e803020
3a00ba882100001a000000ff004b3352
3930343934313031500a000000fc0044
454c4c20555033323134510a000000fd
001d4b1f8c1e000a20202020202001ff
7012790000120016821000007f076f08
000000000044454c9340503130310000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000003490
link-status: Good
supported: Good, Bad
1920x2160 (0x4b) 277.2MHz +HSync -VSync *current +preferred
h: width 1920 start 1968 end 2000 total 2080 skew 0 clock 133.3KHz
v: height 2160 start 2163 end 2173 total 2222 clock 60.0Hz
1920x1200 (0x4c) 193.2MHz -HSync +VSync
h: width 1920 start 2056 end 2256 total 2592 skew 0 clock 74.6KHz
v: height 1200 start 1203 end 1209 total 1245 clock 59.9Hz
1920x1080 (0x4d) 148.5MHz -HSync -VSync
h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 67.5KHz
v: height 1080 start 1084 end 1089 total 1125 clock 60.0Hz
1600x1200 (0x4e) 162.0MHz +HSync +VSync
h: width 1600 start 1664 end 1856 total 2160 skew 0 clock 75.0KHz
v: height 1200 start 1201 end 1204 total 1250 clock 60.0Hz
1680x1050 (0x4f) 146.2MHz -HSync +VSync
h: width 1680 start 1784 end 1960 total 2240 skew 0 clock 65.3KHz
v: height 1050 start 1053 end 1059 total 1089 clock 60.0Hz
1280x1024 (0x50) 135.0MHz +HSync +VSync
h: width 1280 start 1296 end 1440 total 1688 skew 0 clock 80.0KHz
v: height 1024 start 1025 end 1028 total 1066 clock 75.0Hz
1280x1024 (0x51) 108.0MHz +HSync +VSync
h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 64.0KHz
v: height 1024 start 1025 end 1028 total 1066 clock 60.0Hz
1280x800 (0x52) 83.5MHz -HSync +VSync
h: width 1280 start 1352 end 1480 total 1680 skew 0 clock 49.7KHz
v: height 800 start 803 end 809 total 831 clock 59.8Hz
1152x864 (0x53) 108.0MHz +HSync +VSync
h: width 1152 start 1216 end 1344 total 1600 skew 0 clock 67.5KHz
v: height 864 start 865 end 868 total 900 clock 75.0Hz
1024x768 (0x54) 78.8MHz +HSync +VSync
h: width 1024 start 1040 end 1136 total 1312 skew 0 clock 60.0KHz
v: height 768 start 769 end 772 total 800 clock 75.0Hz
1024x768 (0x55) 65.0MHz -HSync -VSync
h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.4KHz
v: height 768 start 771 end 777 total 806 clock 60.0Hz
800x600 (0x56) 49.5MHz +HSync +VSync
h: width 800 start 816 end 896 total 1056 skew 0 clock 46.9KHz
v: height 600 start 601 end 604 total 625 clock 75.0Hz
800x600 (0x57) 40.0MHz +HSync +VSync
h: width 800 start 840 end 968 total 1056 skew 0 clock 37.9KHz
v: height 600 start 601 end 605 total 628 clock 60.3Hz
640x480 (0x58) 31.5MHz -HSync -VSync
h: width 640 start 656 end 720 total 840 skew 0 clock 37.5KHz
v: height 480 start 481 end 484 total 500 clock 75.0Hz
640x480 (0x59) 25.2MHz -HSync -VSync
h: width 640 start 656 end 752 total 800 skew 0 clock 31.5KHz
v: height 480 start 490 end 492 total 525 clock 59.9Hz
720x400 (0x5a) 28.3MHz -HSync +VSync
h: width 720 start 738 end 846 total 900 skew 0 clock 31.5KHz
v: height 400 start 412 end 414 total 449 clock 70.1Hz
```</pre>
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