Как установить DNS и отредактировать etc/resolv.conf на сервере Ubuntu 16,04?

У меня есть VPS, и я не могу использовать завитки , ping и т.д. Поэтому я попросил VPS support в чем моя проблема, и он сказал, что вы должны правильно установить DNS в etc/resolv.conf и настроить nameservers.

Таким образом, мой вопрос заключается в том, как я должен редактировать его и знать, каковы серверы имен?

Может быть, мой вопрос притворяется глупым, но я новичок в Ubuntu и сети. Поэтому я ценю любой ответ.

Вчера у меня начались проблемы с установкой ubuntu на ПК. Я думаю, что это могло быть вызвано модернизациями пакета, так как я смог правильно загрузиться утром, а затем после модернизации были установлены я не был. В течение дня я заметил, что некоторые приложения не запускались должным образом, например, Zoom, Microsoft Teams клиента sftp - все просто показывали артефакты вместо окна приложения. Другие приложения, такие как проводник, phpstorm или chrome, работали без проблем.

В какой-то момент после еще одной неудачной попытки запустить одно из других приложений я решил перезагрузить свой компьютер, и, к сожалению, он вообще не загрузился. Все это показывает белый экран с сотнями цветных пикселей. Явно проблема GPU. После некоторого погуглинга, я узнал, к загрузке с nomaseet опции набора в grub может помочь, и да - я смог добраться до Ubuntu, однако у меня есть два монитора набора вверх, и он был только в зеркальном режиме экрана. При переходе на вкладку дисплеев не отображался монитор для настройки. Опять же, явно проблема GPU...

Благодаря возможности хотя бы включить ПК, я вижу журналы и предоставляю любую необходимую информацию, чтобы решить эту проблему. Журнал dmesg:

[    3.995615] kernel: [drm] radeon: dpm initialized
[    3.997327] kernel: [drm] Found VCE firmware/feedback version 50.0.1 / 17!
[    3.997334] kernel: [drm] GART: num cpu pages 524288, num gpu pages 524288
[    4.000415] kernel: [drm] PCIE gen 3 link speeds already enabled
[    4.003698] kernel: snd_hda_codec_realtek hdaudioC2D0: autoconfig for ALC892: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:line
[    4.003700] kernel: snd_hda_codec_realtek hdaudioC2D0:    speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[    4.003702] kernel: snd_hda_codec_realtek hdaudioC2D0:    hp_outs=1 (0x1b/0x0/0x0/0x0/0x0)
[    4.003703] kernel: snd_hda_codec_realtek hdaudioC2D0:    mono: mono_out=0x0
[    4.003703] kernel: snd_hda_codec_realtek hdaudioC2D0:    inputs:
[    4.003705] kernel: snd_hda_codec_realtek hdaudioC2D0:      Front Mic=0x19
[    4.003706] kernel: snd_hda_codec_realtek hdaudioC2D0:      Rear Mic=0x18
[    4.003708] kernel: snd_hda_codec_realtek hdaudioC2D0:      Line=0x1a
[    4.012616] kernel: [drm] PCIE GART of 2048M enabled (table at 0x00000000001D6000).
[    4.012747] kernel: radeon 0000:09:00.0: WB enabled
[    4.012751] kernel: radeon 0000:09:00.0: fence driver on ring 0 use gpu addr 0x0000000080000c00 and cpu addr 0x0000000003e4bba6
[    4.012752] kernel: radeon 0000:09:00.0: fence driver on ring 1 use gpu addr 0x0000000080000c04 and cpu addr 0x00000000415143fc
[    4.012753] kernel: radeon 0000:09:00.0: fence driver on ring 2 use gpu addr 0x0000000080000c08 and cpu addr 0x0000000054898365
[    4.012754] kernel: radeon 0000:09:00.0: fence driver on ring 3 use gpu addr 0x0000000080000c0c and cpu addr 0x000000004e0b33a6
[    4.012755] kernel: radeon 0000:09:00.0: fence driver on ring 4 use gpu addr 0x0000000080000c10 and cpu addr 0x0000000003005df2
[    4.013069] kernel: radeon 0000:09:00.0: fence driver on ring 5 use gpu addr 0x0000000000075a18 and cpu addr 0x0000000060b61091
[    4.015752] kernel: input: HD-Audio Generic Front Mic as /devices/pci0000:00/0000:00:08.1/0000:0b:00.3/sound/card2/input33
[    4.015795] kernel: input: HD-Audio Generic Rear Mic as /devices/pci0000:00/0000:00:08.1/0000:0b:00.3/sound/card2/input34
[    4.015822] kernel: input: HD-Audio Generic Line as /devices/pci0000:00/0000:00:08.1/0000:0b:00.3/sound/card2/input35
[    4.015852] kernel: input: HD-Audio Generic Line Out as /devices/pci0000:00/0000:00:08.1/0000:0b:00.3/sound/card2/input36
[    4.015883] kernel: input: HD-Audio Generic Front Headphone as /devices/pci0000:00/0000:00:08.1/0000:0b:00.3/sound/card2/input37
[    4.033075] kernel: radeon 0000:09:00.0: fence driver on ring 6 use gpu addr 0x0000000080000c18 and cpu addr 0x00000000b1a637a0
[    4.033076] kernel: radeon 0000:09:00.0: fence driver on ring 7 use gpu addr 0x0000000080000c1c and cpu addr 0x00000000f52d5851
[    4.033084] kernel: [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    4.033085] kernel: radeon 0000:09:00.0: radeon: MSI limited to 32-bit
[    4.033112] kernel: radeon 0000:09:00.0: radeon: using MSI.
[    4.033135] kernel: [drm] radeon: irq initialized.
[    4.195801] kernel: usbcore: registered new interface driver snd-usb-audio
[    4.256841] kernel: [drm] ring test on 0 succeeded in 2 usecs
[    4.256846] kernel: [drm] ring test on 1 succeeded in 1 usecs
[    4.256851] kernel: [drm] ring test on 2 succeeded in 1 usecs
[    4.256861] kernel: [drm] ring test on 3 succeeded in 4 usecs
[    4.256869] kernel: [drm] ring test on 4 succeeded in 4 usecs
[    4.432693] kernel: [drm] ring test on 5 succeeded in 2 usecs
[    4.432700] kernel: [drm] UVD initialized successfully.
[    4.542014] kernel: [drm] ring test on 6 succeeded in 20 usecs
[    4.542028] kernel: [drm] ring test on 7 succeeded in 3 usecs
[    4.542029] kernel: [drm] VCE initialized successfully.
[    4.542296] kernel: [drm] ib test on ring 0 succeeded in 0 usecs
[    4.542340] kernel: [drm] ib test on ring 1 succeeded in 0 usecs
[    4.542382] kernel: [drm] ib test on ring 2 succeeded in 0 usecs
[    4.542423] kernel: [drm] ib test on ring 3 succeeded in 0 usecs
[    4.542464] kernel: [drm] ib test on ring 4 succeeded in 0 usecs
[    4.549191] kernel: EDAC amd64: F17h detected (node 0).
[    4.549249] kernel: EDAC amd64: Node 0: DRAM ECC disabled.
[    4.552558] kernel: cfg80211: Loading compiled-in X.509 certificates for regulatory database
[    4.552837] kernel: cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[    4.554587] kernel: lib80211: common routines for IEEE802.11 drivers
[    4.554588] kernel: lib80211_crypt: registered algorithm 'NULL'
[    4.559765] kernel: r8188eu: module is from the staging directory, the quality is unknown, you have been warned.
[    5.076721] kernel: EDAC amd64: F17h detected (node 0).
[    5.076774] kernel: EDAC amd64: Node 0: DRAM ECC disabled.
[    5.180661] kernel: EDAC amd64: F17h detected (node 0).
[    5.180708] kernel: EDAC amd64: Node 0: DRAM ECC disabled.
[    5.220021] kernel: [drm] ib test on ring 5 succeeded
[    5.276775] kernel: EDAC amd64: F17h detected (node 0).
[    5.276867] kernel: EDAC amd64: Node 0: DRAM ECC disabled.
[    5.396683] kernel: EDAC amd64: F17h detected (node 0).
[    5.396736] kernel: EDAC amd64: Node 0: DRAM ECC disabled.
[    5.444015] kernel: Generic FE-GE Realtek PHY r8169-500:00: attached PHY driver [Generic FE-GE Realtek PHY] (mii_bus:phy_addr=r8169-500:00, irq=IGNORE)
[    5.484633] kernel: EDAC amd64: F17h detected (node 0).
[    5.484680] kernel: EDAC amd64: Node 0: DRAM ECC disabled.
[    5.484895] kernel: kauditd_printk_skb: 34 callbacks suppressed
[    5.484897] kernel: audit: type=1400 audit(1612599094.406:45): apparmor="DENIED" operation="capable" profile="/usr/sbin/cups-browsed" pid=817 comm="cups-browsed" capability=23  capname="sys_nice"
[    5.486095] kernel: aufs 5.x-rcN-20200622
[    5.588697] kernel: EDAC amd64: F17h detected (node 0).
[    5.588746] kernel: EDAC amd64: Node 0: DRAM ECC disabled.
[    5.636074] kernel: r8169 0000:05:00.0 enp5s0: Link is Down
[    5.672657] kernel: EDAC amd64: F17h detected (node 0).
[    5.672706] kernel: EDAC amd64: Node 0: DRAM ECC disabled.
[    5.732041] kernel: [drm] ib test on ring 6 succeeded
[    5.752764] kernel: EDAC amd64: F17h detected (node 0).
[    5.752811] kernel: EDAC amd64: Node 0: DRAM ECC disabled.
[    5.828828] kernel: EDAC amd64: F17h detected (node 0).
[    5.828880] kernel: EDAC amd64: Node 0: DRAM ECC disabled.
[    5.896801] kernel: EDAC amd64: F17h detected (node 0).
[    5.896850] kernel: EDAC amd64: Node 0: DRAM ECC disabled.
[    5.964642] kernel: EDAC amd64: F17h detected (node 0).
[    5.964686] kernel: EDAC amd64: Node 0: DRAM ECC disabled.
[    6.244073] kernel: [drm] ib test on ring 7 succeeded
[    6.245046] kernel: [drm] Radeon Display Connectors
[    6.245047] kernel: [drm] Connector 0:
[    6.245048] kernel: [drm]   DP-1
[    6.245048] kernel: [drm]   HPD4
[    6.245050] kernel: [drm]   DDC: 0x6530 0x6530 0x6534 0x6534 0x6538 0x6538 0x653c 0x653c
[    6.245050] kernel: [drm]   Encoders:
[    6.245050] kernel: [drm]     DFP1: INTERNAL_UNIPHY2
[    6.245051] kernel: [drm] Connector 1:
[    6.245051] kernel: [drm]   HDMI-A-1
[    6.245052] kernel: [drm]   HPD5
[    6.245053] kernel: [drm]   DDC: 0x6540 0x6540 0x6544 0x6544 0x6548 0x6548 0x654c 0x654c
[    6.245053] kernel: [drm]   Encoders:
[    6.245054] kernel: [drm]     DFP2: INTERNAL_UNIPHY2
[    6.245054] kernel: [drm] Connector 2:
[    6.245054] kernel: [drm]   DVI-I-1
[    6.245055] kernel: [drm]   HPD6
[    6.245056] kernel: [drm]   DDC: 0x6580 0x6580 0x6584 0x6584 0x6588 0x6588 0x658c 0x658c
[    6.245056] kernel: [drm]   Encoders:
[    6.245056] kernel: [drm]     DFP3: INTERNAL_UNIPHY
[    6.245057] kernel: [drm]     CRT1: INTERNAL_KLDSCP_DAC1
[    6.245057] kernel: [drm] Connector 3:
[    6.245058] kernel: [drm]   DVI-D-1
[    6.245058] kernel: [drm]   HPD1
[    6.245059] kernel: [drm]   DDC: 0x6570 0x6570 0x6574 0x6574 0x6578 0x6578 0x657c 0x657c
[    6.245059] kernel: [drm]   Encoders:
[    6.245060] kernel: [drm]     DFP4: INTERNAL_UNIPHY1
[    6.337904] kernel: snd_hda_codec_hdmi hdaudioC0D0: HDMI ATI/AMD: no speaker allocation for ELD
[    6.337960] kernel: snd_hda_codec_hdmi hdaudioC0D0: HDMI ATI/AMD: no speaker allocation for ELD
[    6.400743] kernel: snd_hda_codec_hdmi hdaudioC0D0: HDMI ATI/AMD: no speaker allocation for ELD
[    6.402905] kernel: [drm] fb mappable at 0xE05E1000
[    6.402905] kernel: [drm] vram apper at 0xE0000000
[    6.402906] kernel: [drm] size 8294400
[    6.402906] kernel: [drm] fb depth is 24
[    6.402906] kernel: [drm]    pitch is 7680
[    6.402972] kernel: fbcon: radeondrmfb (fb0) is primary device
[    6.403037] kernel: Console: switching to colour frame buffer device 240x67
[    6.403059] kernel: radeon 0000:09:00.0: fb0: radeondrmfb frame buffer device
[    6.424032] kernel: [drm] Initialized radeon 2.50.0 20080528 for 0000:09:00.0 on minor 0
[    6.426824] kernel: AMD-Vi: AMD IOMMUv2 driver by Joerg Roedel <jroedel@suse.de>
[    6.426825] kernel: AMD-Vi: AMD IOMMUv2 functionality not available on this system
[    6.466768] kernel: [drm] amdgpu kernel modesetting enabled.
[    6.466858] kernel: amdgpu: Ignoring ACPI CRAT on non-APU system
[    6.466861] kernel: Virtual CRAT table created for CPU
[    6.466870] kernel: amdgpu: Topology: Add CPU node
[    7.585404] kernel: MAC Address = d0:37:45:0d:4c:9b
[    7.807225] kernel: usb 3-2: reset high-speed USB device number 2 using xhci_hcd
[    8.827042] kernel: rfkill: input handler disabled
[    9.812368] kernel: [drm:si_ib_parse [radeon]] *ERROR* Invalid GFX packet3: 0x50
[    9.812371] kernel:         0xc0012800
[    9.812372] kernel:         0x80000000
[    9.812372] kernel:         0x80000000
[    9.812396] kernel:         0x00808ac0
[    9.812396] kernel:         0x00000000
[    9.812396] kernel:         0x00200020
[    9.812397] kernel:         0xc0017600 <---
[    9.812397] kernel:         0x00000054
[    9.812397] kernel:         0x00808ac0
[    9.812398] kernel:         0xc0047600

lshw -C display
*-display UNCLAIMED              description: VGA compatible controller
       product: Curacao PRO [Radeon R7 370 / R9 270/370 OEM]
       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
       physical id: 0
       bus info: pci@0000:09:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi vga_controller bus_master cap_list
       configuration: latency=0
       resources: memory:e0000000-efffffff memory:fce00000-fce3ffff ioport:e000(size=256) memory:c0000-dffff

lsb_release -a
No LSB modules are available.
Distributor ID:    Ubuntu
Description:    Ubuntu 20.04.2 LTS
Release:    20.04
Codename:    focal

uname -a
Linux kamil-desktop 5.8.0-41-generic #46~20.04.1-Ubuntu SMP Mon Jan 18 17:52:23 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

Это аппаратная проблема, и мой графический процессор просто решил умереть, или ее можно решить с помощью изменений программного обеспечения/конфигурации? Это явно проблема GPU, но, основываясь на том, что при использовании варианта с номодесетом он загружается, и использует карту, чтобы фактически использовать дисплей, я надеюсь, что он не мертв...

Теперь я почти на 100% уверен, что это вызвано модернизацией пакетов с утра пятницы. Вот apt журналы, как вы можете видеть много og libgl и графики связанные модернизации:

Start-Date: 2021-02-05  09:14:18
Commandline: aptdaemon role='role-commit-packages' sender=':1.116'
Upgrade: language-pack-gnome-en:amd64 (1:20.04+20200709, 1:20.04+20210121), update-manager-core:amd64 (1:20.04.10.1, 1:20.04.10.5), libegl-mesa0:amd64 (21.1~git2101280600.0f1a8f~oibaf~f, 21.1~git2102050600.465465~oibaf~f), libfprint-2-2:amd64 (1:1.90.2+tod1-0ubuntu1~20.04.2, 1:1.90.2+tod1-0ubuntu1~20.04.4), libglapi-mesa:amd64 (21.1~git2101280600.0f1a8f~oibaf~f, 21.1~git2102050600.465465~oibaf~f), libglapi-mesa:i386 (21.1~git2101280600.0f1a8f~oibaf~f, 21.1~git2102050600.465465~oibaf~f), update-manager:amd64 (1:20.04.10.1, 1:20.04.10.5), google-chrome-stable:amd64 (88.0.4324.96-1, 88.0.4324.150-1), docker-ce-rootless-extras:amd64 (5:20.10.2~3-0~ubuntu-focal, 5:20.10.3~3-0~ubuntu-focal), python-apt-common:amd64 (2.0.0ubuntu0.20.04.3, 2.0.0ubuntu0.20.04.4), libxatracker2:amd64 (21.1~git2101280600.0f1a8f~oibaf~f, 21.1~git2102050600.465465~oibaf~f), libegl1-mesa:amd64 (21.1~git2101280600.0f1a8f~oibaf~f, 21.1~git2102050600.465465~oibaf~f), language-pack-en:amd64 (1:20.04+20200709, 1:20.04+20210121), libgbm1:amd64 (21.1~git2101280600.0f1a8f~oibaf~f, 21.1~git2102050600.465465~oibaf~f), ubuntu-drivers-common:amd64 (1:0.8.4~0.20.04.3, 1:0.8.6.5~0.20.04.1), python3-update-manager:amd64 (1:20.04.10.1, 1:20.04.10.5), language-pack-gnome-en-base:amd64 (1:20.04+20200709, 1:20.04+20210121), libglib2.0-bin:amd64 (2.64.3-1~ubuntu20.04.1, 2.64.6-1~ubuntu20.04.1), libgl1-mesa-dri:amd64 (21.1~git2101280600.0f1a8f~oibaf~f, 21.1~git2102050600.465465~oibaf~f), libgl1-mesa-dri:i386 (21.1~git2101280600.0f1a8f~oibaf~f, 21.1~git2102050600.465465~oibaf~f), libglib2.0-data:amd64 (2.64.3-1~ubuntu20.04.1, 2.64.6-1~ubuntu20.04.1), language-pack-en-base:amd64 (1:20.04+20200709, 1:20.04+20210121), libgl1-mesa-glx:amd64 (21.1~git2101280600.0f1a8f~oibaf~f, 21.1~git2102050600.465465~oibaf~f), libgl1-mesa-glx:i386 (21.1~git2101280600.0f1a8f~oibaf~f, 21.1~git2102050600.465465~oibaf~f), mesa-vdpau-drivers:amd64 (21.1~git2101280600.0f1a8f~oibaf~f, 21.1~git2102050600.465465~oibaf~f), linux-firmware:amd64 (1.187.8, 1.187.9), mesa-vulkan-drivers:amd64 (21.1~git2101280600.0f1a8f~oibaf~f, 21.1~git2102050600.465465~oibaf~f), mesa-vulkan-drivers:i386 (21.1~git2101280600.0f1a8f~oibaf~f, 21.1~git2102050600.465465~oibaf~f), libglib2.0-0:amd64 (2.64.3-1~ubuntu20.04.1, 2.64.6-1~ubuntu20.04.1), docker-ce:amd64 (5:20.10.2~3-0~ubuntu-focal, 5:20.10.3~3-0~ubuntu-focal), python3-apt:amd64 (2.0.0ubuntu0.20.04.3, 2.0.0ubuntu0.20.04.4), mesa-va-drivers:amd64 (21.1~git2101280600.0f1a8f~oibaf~f, 21.1~git2102050600.465465~oibaf~f), base-files:amd64 (11ubuntu5.2, 11ubuntu5.3), docker-ce-cli:amd64 (5:20.10.2~3-0~ubuntu-focal, 5:20.10.3~3-0~ubuntu-focal), libglx-mesa0:amd64 (21.1~git2101280600.0f1a8f~oibaf~f, 21.1~git2102050600.465465~oibaf~f), libglx-mesa0:i386 (21.1~git2101280600.0f1a8f~oibaf~f, 21.1~git2102050600.465465~oibaf~f)
End-Date: 2021-02-05  09:15:32

Я сделал сегодня полную модернизацию, которое было предложено где-то в интернете, и я могу увидеть снова много libgl модернизаций, но это не помогло...

Start-Date: 2021-02-06  09:15:43
Commandline: apt full-upgrade
Requested-By: kamil (1000)
Upgrade: libegl-mesa0:amd64 (21.1~git2102050600.465465~oibaf~f, 21.1~git2102060600.75c7e4~oibaf~f), update-notifier-common:amd64 (3.192.30.3, 3.192.30.5), libglapi-mesa:amd64 (21.1~git2102050600.465465~oibaf~f, 21.1~git2102060600.75c7e4~oibaf~f), libglapi-mesa:i386 (21.1~git2102050600.465465~oibaf~f, 21.1~git2102060600.75c7e4~oibaf~f), libxatracker2:amd64 (21.1~git2102050600.465465~oibaf~f, 21.1~git2102060600.75c7e4~oibaf~f), libegl1-mesa:amd64 (21.1~git2102050600.465465~oibaf~f, 21.1~git2102060600.75c7e4~oibaf~f), libgbm1:amd64 (21.1~git2102050600.465465~oibaf~f, 21.1~git2102060600.75c7e4~oibaf~f), libgl1-mesa-dri:amd64 (21.1~git2102050600.465465~oibaf~f, 21.1~git2102060600.75c7e4~oibaf~f), libgl1-mesa-dri:i386 (21.1~git2102050600.465465~oibaf~f, 21.1~git2102060600.75c7e4~oibaf~f), libgl1-mesa-glx:amd64 (21.1~git2102050600.465465~oibaf~f, 21.1~git2102060600.75c7e4~oibaf~f), libgl1-mesa-glx:i386 (21.1~git2102050600.465465~oibaf~f, 21.1~git2102060600.75c7e4~oibaf~f), mesa-vdpau-drivers:amd64 (21.1~git2102050600.465465~oibaf~f, 21.1~git2102060600.75c7e4~oibaf~f), mesa-vulkan-drivers:amd64 (21.1~git2102050600.465465~oibaf~f, 21.1~git2102060600.75c7e4~oibaf~f), mesa-vulkan-drivers:i386 (21.1~git2102050600.465465~oibaf~f, 21.1~git2102060600.75c7e4~oibaf~f), update-notifier:amd64 (3.192.30.3, 3.192.30.5), mesa-va-drivers:amd64 (21.1~git2102050600.465465~oibaf~f, 21.1~git2102060600.75c7e4~oibaf~f), libglx-mesa0:amd64 (21.1~git2102050600.465465~oibaf~f, 21.1~git2102060600.75c7e4~oibaf~f), libglx-mesa0:i386 (21.1~git2102050600.465465~oibaf~f, 21.1~git2102060600.75c7e4~oibaf~f)
End-Date: 2021-02-06  09:15:47