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ajn
Asked: 2020-04-30 22:10:03 +0800 CST

平铺显示器支持（LG 34wk95u）[重复]

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我有一台 LG 34WK95U 显示器，无法在 Ubuntu 中以 5120x2160@60Hz 的全分辨率运行。我得到的最大值是 3440x1440@60 或者我可以使用 xrandr 手动强制 5120x2160@30 但无法在正常显示设置中进行选择。

这是我之前的问题高分辨率显示器支持，5120x2160，LG 34WK95的一个分支，尚未解决。

我开始玩更多的东西，xrandr --prop这给了我一些有趣的输出指示显示是平铺的。但是，它仅通过单个 Thunderbolt 3 端口连接，并且也没有双物理显示端口连接器。

所以我开始想，也许它希望以某种方式在单个物理接口上作为两个磁贴进行操作，但我该如何实现呢？平铺尺寸被列为 2560x2160，这是非常令人鼓舞的，因为这是我实际想要的全分辨率的一半。

更新：在线阅读看来，显示器应该能够使用 DP1.2 使用 MST 和平铺，或 DP1.4 使用 SST 而不使用平铺。使用监视器 OSD 在 DP 版本之间切换不会以任何我能看到的方式改变 xrandr 的输出。

https://www.dell.com/community/XPS/LG-Ultrawide-Monitor-34-inch-5k2k-compatibility/mp/7433664/highlight/true#M38557

https://www.tonymacx86.com/threads/success-gigabyte-designare-z390-thunderbolt-3-i7-9700k-amd-rx-580.267551/page-679#post-1994071

$ xrandr --prop
Screen 0: minimum 320 x 200, current 3440 x 1440, maximum 16384 x 16384
eDP-1 connected (normal left inverted right x axis y axis)
    _MUTTER_PRESENTATION_OUTPUT: 0 
    EDID: 
        00ffffffffffff004d10ba1400000000
        161d0104a52213780ede50a3544c9926
        0f505400000001010101010101010101
        010101010101ac3780a070383e403020
        350058c2100000180000000000000000
        00000000000000000000000000fe004d
        57503154804c513135364d3100000000
        0002410332001200000a010a202000d3
    scaling mode: Full aspect 
        supported: Full, Center, Full aspect
    max bpc: 12 
        range: (6, 12)
    Broadcast RGB: Automatic 
        supported: Automatic, Full, Limited 16:235
    link-status: Good 
        supported: Good, Bad
    CONNECTOR_ID: 86 
        supported: 86
    non-desktop: 0 
        range: (0, 1)
   1920x1080     60.00 +  59.97    59.96    59.93  
   1680x1050     59.95    59.88  
   1600x1024     60.17  
   1400x1050     59.98  
   1600x900      59.99    59.94    59.95    59.82  
   1280x1024     60.02  
   1440x900      59.89  
   1400x900      59.96    59.88  
   1280x960      60.00  
   1440x810      60.00    59.97  
   1368x768      59.88    59.85  
   1360x768      59.80    59.96  
   1280x800      59.99    59.97    59.81    59.91  
   1152x864      60.00  
   1280x720      60.00    59.99    59.86    59.74  
   1024x768      60.04    60.00  
   960x720       60.00  
   928x696       60.05  
   896x672       60.01  
   1024x576      59.95    59.96    59.90    59.82  
   960x600       59.93    60.00  
   960x540       59.96    59.99    59.63    59.82  
   800x600       60.00    60.32    56.25  
   840x525       60.01    59.88  
   864x486       59.92    59.57  
   800x512       60.17  
   700x525       59.98  
   800x450       59.95    59.82  
   640x512       60.02  
   720x450       59.89  
   700x450       59.96    59.88  
   640x480       60.00    59.94  
   720x405       59.51    58.99  
   684x384       59.88    59.85  
   680x384       59.80    59.96  
   640x400       59.88    59.98  
   576x432       60.06  
   640x360       59.86    59.83    59.84    59.32  
   512x384       60.00  
   512x288       60.00    59.92  
   480x270       59.63    59.82  
   400x300       60.32    56.34  
   432x243       59.92    59.57  
   320x240       60.05  
   360x202       59.51    59.13  
   320x180       59.84    59.32  
DP-1 connected primary 3440x1440+0+0 (normal left inverted right x axis y axis) 800mm x 330mm
    EDID: 
        00ffffffffffff001e6d2177d3ad0200
        091d0104b55021789e09c1ae5044af26
        0e50542108007140818081c0a9c0d1c0
        810001010101e77c70a0d0a029503020
        3a00204a3100001a9d6770a0d0a02250
        30203a00204a3100001a000000fd0030
        3d1e874c000a202020202020000000fc
        004c472048445220354b0a202020033d
        02031971449004030123090707830100
        00e305c000e30605014dd000a0f0703e
        803020650c204a3100001a286800a0f0
        703e800890650c204a3100001a000000
        00000000000000000000000000000000
        00000000000000000000000000000000
        00000000000000000000000000000000
        000000000000000000000000000000e3
        701279030001000c401fe40c00147008
        90788999030014e07c00086f0d9f002f
        801f009f052800020009000000000000
        00000000000000000000000000000000
        00000000000000000000000000000000
        00000000000000000000000000000000
        00000000000000000000000000000000
        00000000000000000000000000002590
        701279030012001682100000ff096f08
    _MUTTER_PRESENTATION_OUTPUT: 0 
    Content Protection: Undesired 
        supported: Undesired, Desired, Enabled
    max bpc: 12 
        range: (6, 12)
    Broadcast RGB: Automatic 
        supported: Automatic, Full, Limited 16:235
    audio: auto 
        supported: force-dvi, off, auto, on
    link-status: Good 
        supported: Good, Bad
    CONNECTOR_ID: 92 
        supported: 92
    non-desktop: 0 
        range: (0, 1)
   3440x1440     59.97*+  59.96    49.99  
   3840x2160     60.00    30.00  
   1920x1080     60.00    60.00    59.94  
   1600x900      60.00  
   1280x1024     60.02  
   1280x800      59.81  
   1152x864      59.97  
   1280x720      60.00    59.94  
   1024x768      60.00  
   800x600       60.32  
   720x480       60.00    59.94  
   640x480       60.00    59.94  
DP-2 connected (normal left inverted right x axis y axis)
    EDID: 
        00ffffffffffff001e6d2177d3ad0200
        091d0104b55021789e09c1ae5044af26
        0e505420000001010101010101010101
        01010101010100000000000000000000
        00000000000000000000000000000000
        00000000000000000000000000fd0030
        3d1e874c000a202020202020000000fc
        004c472048445220354b0a202020017a
        701279030001000c401fe40c00147008
        9078899912001680101000ff096f0800
        0000000047534d217701010101030014
        f0890008ff094f0007801f006f085100
        00000700000000000000000000000000
        00000000000000000000000000000000
        00000000000000000000000000000000
        00000000000000000000000000003290
    TILE: 1 1 2 1 1 0 2560 2160 
    Content Protection: Undesired 
        supported: Undesired, Desired, Enabled
    max bpc: 12 
        range: (6, 12)
    Broadcast RGB: Automatic 
        supported: Automatic, Full, Limited 16:235
    audio: auto 
        supported: force-dvi, off, auto, on
    link-status: Good 
        supported: Good, Bad
    CONNECTOR_ID: 100 
        supported: 100
    non-desktop: 0 
        range: (0, 1)
   2560x2160     59.66  
   640x480       59.94  
DP-3 disconnected (normal left inverted right x axis y axis)
    Content Protection: Undesired 
        supported: Undesired, Desired, Enabled
    max bpc: 12 
        range: (6, 12)
    Broadcast RGB: Automatic 
        supported: Automatic, Full, Limited 16:235
    audio: auto 
        supported: force-dvi, off, auto, on
    link-status: Good 
        supported: Good, Bad
    CONNECTOR_ID: 106 
        supported: 106
    non-desktop: 0 
        range: (0, 1)

这是在lspci笔记本电脑端显示硬件的输出，我目前正在使用 nvidia 卡运行，但如果我切换到 Intel 卡并重新启动，显示信息看起来相同。

00:00.0 Host bridge: Intel Corporation Device 3e20 (rev 0d)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16) (rev 0d)
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 630 (Mobile) (rev 02)
00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem (rev 0d)
00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
00:12.0 Signal processing controller: Intel Corporation Cannon Lake PCH Thermal Controller (rev 10)
00:14.0 USB controller: Intel Corporation Cannon Lake PCH USB 3.1 xHCI Host Controller (rev 10)
00:14.2 RAM memory: Intel Corporation Cannon Lake PCH Shared SRAM (rev 10)
00:15.0 Serial bus controller [0c80]: Intel Corporation Cannon Lake PCH Serial IO I2C Controller #0 (rev 10)
00:15.1 Serial bus controller [0c80]: Intel Corporation Cannon Lake PCH Serial IO I2C Controller #1 (rev 10)
00:16.0 Communication controller: Intel Corporation Cannon Lake PCH HECI Controller (rev 10)
00:17.0 SATA controller: Intel Corporation Cannon Lake Mobile PCH SATA AHCI Controller (rev 10)
00:1b.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #17 (rev f0)
00:1c.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #1 (rev f0)
00:1c.4 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #5 (rev f0)
00:1d.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #9 (rev f0)
00:1f.0 ISA bridge: Intel Corporation Device a30e (rev 10)
00:1f.3 Audio device: Intel Corporation Cannon Lake PCH cAVS (rev 10)
00:1f.4 SMBus: Intel Corporation Cannon Lake PCH SMBus Controller (rev 10)
00:1f.5 Serial bus controller [0c80]: Intel Corporation Cannon Lake PCH SPI Controller (rev 10)
01:00.0 3D controller: NVIDIA Corporation TU117GLM [Quadro T2000 Mobile / Max-Q] (rev a1)
02:00.0 PCI bridge: Intel Corporation JHL6340 Thunderbolt 3 Bridge (C step) [Alpine Ridge 2C 2016] (rev 02)
03:00.0 PCI bridge: Intel Corporation JHL6340 Thunderbolt 3 Bridge (C step) [Alpine Ridge 2C 2016] (rev 02)
03:01.0 PCI bridge: Intel Corporation JHL6340 Thunderbolt 3 Bridge (C step) [Alpine Ridge 2C 2016] (rev 02)
03:02.0 PCI bridge: Intel Corporation JHL6340 Thunderbolt 3 Bridge (C step) [Alpine Ridge 2C 2016] (rev 02)
04:00.0 System peripheral: Intel Corporation JHL6340 Thunderbolt 3 NHI (C step) [Alpine Ridge 2C 2016] (rev 02)
05:00.0 PCI bridge: Intel Corporation JHL7540 Thunderbolt 3 Bridge [Titan Ridge DD 2018] (rev 06)
06:02.0 PCI bridge: Intel Corporation JHL7540 Thunderbolt 3 Bridge [Titan Ridge DD 2018] (rev 06)
07:00.0 USB controller: Intel Corporation JHL7540 Thunderbolt 3 USB Controller [Titan Ridge 4C 2018] (rev 06)
3a:00.0 USB controller: Intel Corporation JHL6340 Thunderbolt 3 USB 3.1 Controller (C step) [Alpine Ridge 2C 2016] (rev 02)
3b:00.0 Network controller: Intel Corporation Wireless-AC 9260 (rev 29)
3c:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader (rev 01)
3d:00.0 Non-Volatile memory controller: SK hynix Device 1627
multiple-monitors nvidia xrandr display-resolution external-monitor

2 个回答

  1. 我可以通过使用 SwitchResX 从 macOS 复制特定模式来使其工作。对我来说，它不需要同时使用带有 xrandr 的 DisplayPort。我在 OSD 中选择了 DisplayPort 1.2。

    使用 xrandr 找到监视器的第一个输出并将其放在下面代替DisplayPort-2

    xrandr --newmode "5120x2160" 703.75 5120 5168 5200 5280 2160 2163 2173 2222 +HSync -VSync
xrandr --addmode DisplayPort-2 5120x2160
xrandr --output DisplayPort-2 --mode 5120x2160
    • 1
  2. Best Answer

    该问题已在 Linux 5.9rc1 中得到修复，至少对于 Intel 显卡而言是这样。有关更多详细信息，请参见此处 https://gitlab.freedesktop.org/drm/intel/-/issues/27

    • 0

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