最近我买了 ideapad s540，ubuntu 18.04 上一切都很好，除了 hdmi 输出，使用 intel vga 时它根本无法识别第二个显示器，使用 nvidia 1650 时有时重启后可以工作，有时不工作，随机！我测试了最新的属性和开源驱动程序、内核从 4.14 到 5.4.2、lightdm，但没有工作，这是我的系统日志和内核日志 grep 和 hdmi，我希望有人能帮助我：
内核日志
grep -i hdmi /var/log/kern.log
Dec 11 07:46:29 jividijuvent kernel: [ 0.126481] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 11 07:46:29 jividijuvent kernel: [ 3.511235] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input20
Dec 11 07:46:29 jividijuvent kernel: [ 3.511282] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input21
Dec 11 07:46:29 jividijuvent kernel: [ 3.511334] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input22
Dec 11 07:46:29 jividijuvent kernel: [ 3.511384] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input23
Dec 11 07:46:29 jividijuvent kernel: [ 3.511439] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input24
Dec 11 07:46:29 jividijuvent kernel: [ 3.942339] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input25
Dec 12 02:38:15 jividijuvent kernel: [ 0.124563] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 12 02:38:15 jividijuvent kernel: [ 3.485623] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input20
Dec 12 02:38:15 jividijuvent kernel: [ 3.485673] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input21
Dec 12 02:38:15 jividijuvent kernel: [ 3.485715] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input22
Dec 12 02:38:15 jividijuvent kernel: [ 3.485763] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input23
Dec 12 02:38:15 jividijuvent kernel: [ 3.485809] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input24
Dec 12 02:38:15 jividijuvent kernel: [ 3.956212] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input25
Dec 11 20:05:26 jividijuvent kernel: [ 0.125759] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 11 20:05:26 jividijuvent kernel: [ 3.605585] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input17
Dec 11 20:05:26 jividijuvent kernel: [ 3.605640] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input18
Dec 11 20:05:26 jividijuvent kernel: [ 3.605688] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input19
Dec 11 20:05:26 jividijuvent kernel: [ 3.605750] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input20
Dec 11 20:05:26 jividijuvent kernel: [ 3.605802] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input21
Dec 11 20:05:26 jividijuvent kernel: [ 3.969278] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input25
Dec 11 20:34:05 jividijuvent kernel: [ 0.128101] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 11 20:34:05 jividijuvent kernel: [ 3.529761] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input17
Dec 11 20:34:05 jividijuvent kernel: [ 3.529799] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input18
Dec 11 20:34:05 jividijuvent kernel: [ 3.529839] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input19
Dec 11 20:34:05 jividijuvent kernel: [ 3.529878] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input20
Dec 11 20:34:05 jividijuvent kernel: [ 3.529919] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input21
Dec 11 20:34:05 jividijuvent kernel: [ 3.983667] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input25
Dec 11 20:35:53 jividijuvent kernel: [ 0.130001] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 11 20:35:53 jividijuvent kernel: [ 3.677649] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input17
Dec 11 20:35:53 jividijuvent kernel: [ 3.677700] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input18
Dec 11 20:35:53 jividijuvent kernel: [ 3.677754] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input19
Dec 11 20:35:53 jividijuvent kernel: [ 3.677811] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input20
Dec 11 20:35:53 jividijuvent kernel: [ 3.677864] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input21
Dec 11 20:35:53 jividijuvent kernel: [ 3.978349] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input25
Dec 11 20:42:42 jividijuvent kernel: [ 0.130282] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 11 20:42:42 jividijuvent kernel: [ 3.729631] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input17
Dec 11 20:42:42 jividijuvent kernel: [ 3.729665] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input18
Dec 11 20:42:42 jividijuvent kernel: [ 3.729709] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input19
Dec 11 20:42:42 jividijuvent kernel: [ 3.729742] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input20
Dec 11 20:42:42 jividijuvent kernel: [ 3.729776] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input21
Dec 11 20:42:42 jividijuvent kernel: [ 4.062498] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input25
Dec 11 20:52:25 jividijuvent kernel: [ 0.124221] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 11 20:52:25 jividijuvent kernel: [ 3.159630] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input14
Dec 11 20:52:25 jividijuvent kernel: [ 3.159684] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input15
Dec 11 20:52:25 jividijuvent kernel: [ 3.159715] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input16
Dec 11 20:52:25 jividijuvent kernel: [ 3.159779] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input17
Dec 11 20:52:25 jividijuvent kernel: [ 3.235871] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input18
Dec 11 20:52:25 jividijuvent kernel: [ 3.588107] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input22
Dec 11 20:57:55 jividijuvent kernel: [ 0.128958] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 11 20:57:55 jividijuvent kernel: [ 2.868582] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input10
Dec 11 20:57:55 jividijuvent kernel: [ 2.868640] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input11
Dec 11 20:57:55 jividijuvent kernel: [ 2.868689] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input12
Dec 11 20:57:55 jividijuvent kernel: [ 2.868727] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input13
Dec 11 20:57:55 jividijuvent kernel: [ 2.868763] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input14
Dec 11 20:57:55 jividijuvent kernel: [ 3.332542] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input21
Dec 11 22:07:57 jividijuvent kernel: [ 0.130008] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 11 22:07:57 jividijuvent kernel: [ 2.904517] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input10
Dec 11 22:07:57 jividijuvent kernel: [ 2.904557] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input11
Dec 11 22:07:57 jividijuvent kernel: [ 2.904599] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input12
Dec 11 22:07:57 jividijuvent kernel: [ 2.904645] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input13
Dec 11 22:07:57 jividijuvent kernel: [ 2.904690] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input14
Dec 11 22:07:57 jividijuvent kernel: [ 3.421749] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input21
Dec 11 22:21:15 jividijuvent kernel: [ 0.129920] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 11 22:21:15 jividijuvent kernel: [ 4.094198] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input18
Dec 11 22:21:15 jividijuvent kernel: [ 4.862541] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input21
Dec 11 22:21:15 jividijuvent kernel: [ 4.862567] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input22
Dec 11 22:21:15 jividijuvent kernel: [ 4.862592] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input23
Dec 11 22:21:15 jividijuvent kernel: [ 4.862618] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input24
Dec 11 22:21:15 jividijuvent kernel: [ 4.862650] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input25
Dec 12 16:11:43 jividijuvent kernel: [ 0.130181] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 12 16:11:43 jividijuvent kernel: [ 3.894773] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input14
Dec 12 16:11:43 jividijuvent kernel: [ 3.894822] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input15
Dec 12 16:11:43 jividijuvent kernel: [ 3.894869] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input16
Dec 12 16:11:43 jividijuvent kernel: [ 3.894927] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input17
Dec 12 16:11:43 jividijuvent kernel: [ 3.894976] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input18
Dec 12 16:11:43 jividijuvent kernel: [ 4.285604] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input22
Dec 12 14:14:43 jividijuvent kernel: [ 0.125908] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 12 14:14:43 jividijuvent kernel: [ 3.429179] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input13
Dec 12 14:14:43 jividijuvent kernel: [ 3.429212] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input14
Dec 12 14:14:43 jividijuvent kernel: [ 3.429239] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input15
Dec 12 14:14:43 jividijuvent kernel: [ 3.429266] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input16
Dec 12 14:14:43 jividijuvent kernel: [ 3.429291] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input17
Dec 12 14:14:43 jividijuvent kernel: [ 3.697515] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input21
Dec 12 19:59:07 jividijuvent kernel: [ 0.128083] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 12 19:59:07 jividijuvent kernel: [ 3.281903] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input10
Dec 12 19:59:07 jividijuvent kernel: [ 3.281929] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input11
Dec 12 19:59:07 jividijuvent kernel: [ 3.281955] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input12
Dec 12 19:59:07 jividijuvent kernel: [ 3.281987] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input13
Dec 12 19:59:07 jividijuvent kernel: [ 3.282014] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input14
Dec 12 19:59:07 jividijuvent kernel: [ 3.647408] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input21
Dec 13 02:22:12 jividijuvent kernel: [ 0.129614] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 13 02:22:12 jividijuvent kernel: [ 3.628939] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input17
Dec 13 02:22:12 jividijuvent kernel: [ 3.628964] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input18
Dec 13 02:22:12 jividijuvent kernel: [ 3.628988] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input19
Dec 13 02:22:12 jividijuvent kernel: [ 3.629011] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input20
Dec 13 02:22:12 jividijuvent kernel: [ 3.629035] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input21
Dec 13 02:22:12 jividijuvent kernel: [ 4.017425] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input25
Dec 13 11:47:46 jividijuvent kernel: [ 0.130047] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 13 11:47:46 jividijuvent kernel: [ 3.310660] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input10
Dec 13 11:47:46 jividijuvent kernel: [ 3.310712] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input11
Dec 13 11:47:46 jividijuvent kernel: [ 3.311239] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input12
Dec 13 11:47:46 jividijuvent kernel: [ 3.311384] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input13
Dec 13 11:47:46 jividijuvent kernel: [ 3.311470] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input14
Dec 13 11:47:46 jividijuvent kernel: [ 3.761529] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input21
Dec 13 13:29:32 jividijuvent kernel: [ 5474.829654] nvidia-modeset: WARNING: GPU:0: Unable to read EDID for display device BenQ EW2775ZH (HDMI-0)
Dec 13 13:30:00 jividijuvent kernel: [ 0.125455] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 13 13:30:00 jividijuvent kernel: [ 4.633074] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input15
Dec 13 13:30:00 jividijuvent kernel: [ 5.161480] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input21
Dec 13 13:30:00 jividijuvent kernel: [ 5.161522] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input22
Dec 13 13:30:00 jividijuvent kernel: [ 5.161558] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input23
Dec 13 13:30:00 jividijuvent kernel: [ 5.161591] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input24
Dec 13 13:30:00 jividijuvent kernel: [ 5.162550] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input25
Dec 13 13:51:27 jividijuvent kernel: [ 0.125710] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 13 13:51:27 jividijuvent kernel: [ 4.426542] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input20
Dec 13 13:51:27 jividijuvent kernel: [ 4.426576] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input21
Dec 13 13:51:27 jividijuvent kernel: [ 4.426611] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input22
Dec 13 13:51:27 jividijuvent kernel: [ 4.426647] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input23
Dec 13 13:51:27 jividijuvent kernel: [ 4.426682] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input24
Dec 13 13:51:27 jividijuvent kernel: [ 4.681425] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input25
系统日志
grep -i hdmi /var/log/syslog
Dec 13 13:29:16 jividijuvent /usr/lib/gdm3/gdm-x-session[15220]: (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=3 (/dev/input/event14)
Dec 13 13:29:16 jividijuvent /usr/lib/gdm3/gdm-x-session[15220]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=3 (/dev/input/event10)
Dec 13 13:29:16 jividijuvent /usr/lib/gdm3/gdm-x-session[15220]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=7 (/dev/input/event11)
Dec 13 13:29:16 jividijuvent /usr/lib/gdm3/gdm-x-session[15220]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=8 (/dev/input/event13)
Dec 13 13:29:16 jividijuvent /usr/lib/gdm3/gdm-x-session[15220]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=9 (/dev/input/event15)
Dec 13 13:29:16 jividijuvent /usr/lib/gdm3/gdm-x-session[15220]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=10 (/dev/input/event16)
Dec 13 13:29:32 jividijuvent kernel: [ 5474.829654] nvidia-modeset: WARNING: GPU:0: Unable to read EDID for display device BenQ EW2775ZH (HDMI-0)
Dec 13 13:30:00 jividijuvent kernel: [ 0.125455] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 13 13:30:00 jividijuvent kernel: [ 4.633074] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input15
Dec 13 13:30:00 jividijuvent kernel: [ 5.161480] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input21
Dec 13 13:30:00 jividijuvent kernel: [ 5.161522] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input22
Dec 13 13:30:00 jividijuvent kernel: [ 5.161558] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input23
Dec 13 13:30:00 jividijuvent kernel: [ 5.161591] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input24
Dec 13 13:30:00 jividijuvent kernel: [ 5.162550] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input25
Dec 13 13:30:10 jividijuvent /usr/lib/gdm3/gdm-x-session[1846]: (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=3 (/dev/input/event9)
Dec 13 13:30:11 jividijuvent /usr/lib/gdm3/gdm-x-session[1846]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=3 (/dev/input/event16)
Dec 13 13:30:11 jividijuvent /usr/lib/gdm3/gdm-x-session[1846]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=7 (/dev/input/event17)
Dec 13 13:30:11 jividijuvent /usr/lib/gdm3/gdm-x-session[1846]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=8 (/dev/input/event18)
Dec 13 13:30:11 jividijuvent /usr/lib/gdm3/gdm-x-session[1846]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=9 (/dev/input/event19)
Dec 13 13:30:11 jividijuvent /usr/lib/gdm3/gdm-x-session[1846]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=10 (/dev/input/event20)
Dec 13 13:32:14 jividijuvent /usr/lib/gdm3/gdm-x-session[3342]: (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=3 (/dev/input/event9)
Dec 13 13:32:14 jividijuvent /usr/lib/gdm3/gdm-x-session[3342]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=3 (/dev/input/event16)
Dec 13 13:32:14 jividijuvent /usr/lib/gdm3/gdm-x-session[3342]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=7 (/dev/input/event17)
Dec 13 13:32:14 jividijuvent /usr/lib/gdm3/gdm-x-session[3342]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=8 (/dev/input/event18)
Dec 13 13:32:14 jividijuvent /usr/lib/gdm3/gdm-x-session[3342]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=9 (/dev/input/event19)
Dec 13 13:32:14 jividijuvent /usr/lib/gdm3/gdm-x-session[3342]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=10 (/dev/input/event20)
Dec 13 13:51:27 jividijuvent kernel: [ 0.125710] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
Dec 13 13:51:27 jividijuvent kernel: [ 4.426542] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input20
Dec 13 13:51:27 jividijuvent kernel: [ 4.426576] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input21
Dec 13 13:51:27 jividijuvent kernel: [ 4.426611] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input22
Dec 13 13:51:27 jividijuvent kernel: [ 4.426647] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input23
Dec 13 13:51:27 jividijuvent kernel: [ 4.426682] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input24
Dec 13 13:51:27 jividijuvent kernel: [ 4.681425] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.4/0000:02:00.1/sound/card1/input25
Dec 13 13:51:42 jividijuvent /usr/lib/gdm3/gdm-x-session[1659]: (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=3 (/dev/input/event20)
Dec 13 13:51:42 jividijuvent /usr/lib/gdm3/gdm-x-session[1659]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=3 (/dev/input/event15)
Dec 13 13:51:42 jividijuvent /usr/lib/gdm3/gdm-x-session[1659]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=7 (/dev/input/event16)
Dec 13 13:51:42 jividijuvent /usr/lib/gdm3/gdm-x-session[1659]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=8 (/dev/input/event17)
Dec 13 13:51:42 jividijuvent /usr/lib/gdm3/gdm-x-session[1659]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=9 (/dev/input/event18)
Dec 13 13:51:42 jividijuvent /usr/lib/gdm3/gdm-x-session[1659]: (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=10 (/dev/input/event19)
带显示的系统日志
grep -i fail /var/log/syslog|grep -i display
Dec 13 13:29:19 jividijuvent gsd-xsettings[15478]: Failed to get current display configuration state: GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: Name "org.gnome.Mutter.DisplayConfig" does not exist
Dec 13 13:30:15 jividijuvent gsd-xsettings[2161]: Failed to get current display configuration state: GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: Name "org.gnome.Mutter.DisplayConfig" does not exist
Dec 13 13:32:15 jividijuvent gsd-xsettings[3572]: Failed to get current display configuration state: GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: Name "org.gnome.Mutter.DisplayConfig" does not exist
Dec 13 13:51:44 jividijuvent gsd-xsettings[1935]: Failed to get current display configuration state: GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: Name "org.gnome.Mutter.DisplayConfig" does not exist
带有失败和 gdm 的 syslog
grep -i fail /var/log/syslog|grep -i gdm
Dec 13 13:29:15 jividijuvent /usr/lib/gdm3/gdm-x-session[15220]: xf86EnableIOPorts: failed to set IOPL for I/O (Operation not permitted)
Dec 13 13:30:10 jividijuvent /usr/lib/gdm3/gdm-x-session[1846]: xf86EnableIOPorts: failed to set IOPL for I/O (Operation not permitted)
Dec 13 13:32:13 jividijuvent /usr/lib/gdm3/gdm-x-session[3342]: xf86EnableIOPorts: failed to set IOPL for I/O (Operation not permitted)
Dec 13 13:51:41 jividijuvent /usr/lib/gdm3/gdm-x-session[1659]: xf86EnableIOPorts: failed to set IOPL for I/O (Operation not permitted)
答案1
我认为该问题在新的 Nvidia 440 驱动程序上已得到解决，但是我在 ubuntu 20.04 上进行了测试，但有一点需要注意。
首次安装时，我在 ubuntu 安装过程中检查了“安装第三方图形软件...”，安装后安装了 Nvidia 设置应用程序，但它什么也没做，只是打开了一个空白屏幕，没有给我任何选项，hdmi 也不起作用。我再次安装了 ubuntu，在安装过程中没有标记该选项，并通过 ubuntu 附加驱动程序设置安装了 Nvidia 驱动程序，一切正常。
我必须考虑到，由于此笔记本电脑配置，hdmi 端口仅在您在 Nvidia x 服务器设置应用程序中选择 Nvidia 图形时才有效，并且 hdmi 在英特尔图形上不起作用，无论是在 Windows 还是 Linux 上