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Thread: [20.04.02] Monitor randomly loses connection

  1. #1
    Join Date
    Jul 2021
    Beans
    3

    [20.04.02] Monitor randomly loses connection

    The problem started out of the blue (possibly after an update/upgrade) some week ago, and I have been struggling with it ever since.


    Every once in a while the screen goes blank and shows “no signal” message. There are only two ways to wake the monitor up: (1) computer shutdown and restart; (2) unplugging and replugging the monitor (which I may need to do more than once, at times). Unplugging and replugging occasionally results in a display change, with fonts getting much bigger, or some icons getting invisible for some time.



    When the screen goes blank, the computer is still running – e.g., the music, if it is played, keeps playing, I still can type, etc.



    The problem will recur after 1 minute, 10 minutes, half an hour, etc. – it appears completely random. There is no discernible activity that triggers it.


    I am using Ubuntu 20.04.02.


    The Gnome version is 3.36.8



    The graphics is an integrated Intel:

    Intel® Core™ i3-6100 CPU @ 3.70GHz × 4

    Mesa Intel® HD Graphics 530 (SKL GT2)





    The motherboard is ASRock H110M-HDV.



    The port is VGA.



    The monitor is a really and truly ancient ASUS.



    The driver info is as follows:



    $ lspci -k | grep -EA3 'VGA|3D|Display'
    00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06)

    Subsystem: ASRock Incorporation HD Graphics 530

    Kernel driver in use: i915

    Kernel modules: i915



    I have tried replacing the cable, and it changed nothing. I have also checked the temperatures, and there seems to be no overheating. The software is up to date.



    All help very much appreciated.

  2. #2
    Join Date
    Jul 2021
    Beans
    11

    Re: [20.04.02] Monitor randomly loses connection

    Do you get errors logged into journalctl ?
    red lines are errors; yellow ones are only warnings

    from a terminal, run
    journalctl -b

  3. #3
    Join Date
    Jul 2021
    Beans
    3

    Re: [20.04.02] Monitor randomly loses connection

    Thank you!

    - Logs begin at Tue 2020-05-05 22:35:59 CEST, end at Mon 2021-07-05 13:13:40 C>
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: microcode: microcode updated>
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: Linux version 5.4.0-77-gener>
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: Command line: BOOT_IMAGE=/bo>
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: KERNEL supported cpus:
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: Intel GenuineIntel
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: AMD AuthenticAMD
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: Hygon HygonGenuine
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: Centaur CentaurHauls
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: zhaoxin Shanghai
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Supporting XSAVE fe>
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Supporting XSAVE fe>
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Supporting XSAVE fe>
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Supporting XSAVE fe>
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Supporting XSAVE fe>
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: xstate_offset[2]: >
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: xstate_offset[3]: >
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: xstate_offset[4]: >
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Enabled xstate feat>
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-provided physical RAM m>
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x0000000000>
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x0000000000>
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x0000000000>
    lines 1-23...skipping...
    -- Logs begin at Tue 2020-05-05 22:35:59 CEST, end at Mon 2021-07-05 13:13:40 CEST. --
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: microcode: microcode updated early to revision 0xea, date = 2021-01-25
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: Linux version 5.4.0-77-generic (buildd@lgw01-amd64-028) (gcc version 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04)) #86-Ubuntu SMP Thu Jun 17 02:35:03 UTC 2021 (Ubuntu 5.4.0->
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: Command line: BOOT_IMAGE=/boot/vmlinuz-5.4.0-77-generic root=UUID=db9a0246-b1d5-4053-98d8-edcf2ab4deee ro quiet splash vt.handoff=7
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: KERNEL supported cpus:
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: Intel GenuineIntel
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: AMD AuthenticAMD
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: Hygon HygonGenuine
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: Centaur CentaurHauls
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: zhaoxin Shanghai
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Supporting XSAVE feature 0x008: 'MPX bounds registers'
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Supporting XSAVE feature 0x010: 'MPX CSR'
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: xstate_offset[3]: 832, xstate_sizes[3]: 64
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: xstate_offset[4]: 896, xstate_sizes[4]: 64
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Enabled xstate features 0x1f, context size is 960 bytes, using 'compacted' format.
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-provided physical RAM map:
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x0000000000000000-0x000000000009c7ff] usable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x000000000009c800-0x000000000009ffff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x00000000000e0000-0x00000000000fffff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x0000000000100000-0x000000007671ffff] usable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x0000000076720000-0x0000000076720fff] ACPI NVS
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x0000000076721000-0x000000007674afff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x000000007674b000-0x000000007e171fff] usable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x000000007e172000-0x000000007e475fff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x000000007e476000-0x000000007e676fff] usable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x000000007e677000-0x000000007edc9fff] ACPI NVS
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x000000007edca000-0x000000007f2fefff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x000000007f2ff000-0x000000007f2fffff] usable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x000000007f300000-0x000000007f3fffff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x00000000e0000000-0x00000000efffffff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x00000000fe000000-0x00000000fe010fff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x00000000fec00000-0x00000000fec00fff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x00000000fee00000-0x00000000fee00fff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x00000000ff000000-0x00000000ffffffff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x0000000100000000-0x000000026effffff] usable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: NX (Execute Disable) protection: active
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: SMBIOS 2.8 present.
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: DMI: To Be Filled By O.E.M. To Be Filled By O.E.M./H110M-HDV, BIOS P1.70 06/21/2016
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: tsc: Detected 3700.000 MHz processor
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: tsc: Detected 3699.850 MHz TSC
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: e820: remove [mem 0x000a0000-0x000fffff] usable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: last_pfn = 0x26f000 max_arch_pfn = 0x400000000
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: MTRR default type: write-back
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: MTRR fixed ranges enabled:
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: 00000-9FFFF write-back
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: A0000-BFFFF uncachable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: C0000-FFFFF write-protect
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: MTRR variable ranges enabled:
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: 0 base 0080000000 mask 7F80000000 uncachable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: 1 base 007F800000 mask 7FFF800000 uncachable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: 2 disabled
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: 3 disabled
    lines 1-57



    -- Logs begin at Tue 2020-05-05 22:35:59 CEST, end at Mon 2021-07-05 13:13:40 CEST. --
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: microcode: microcode updated early to revision 0xea, date = 2021-01-25
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: Linux version 5.4.0-77-generic (buildd@lgw01-amd64-028) (gcc version 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04)) #86-Ubuntu SMP Thu Jun 17 02:35:03 UTC 2021 (Ubuntu >
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: Command line: BOOT_IMAGE=/boot/vmlinuz-5.4.0-77-generic root=UUID=db9a0246-b1d5-4053-98d8-edcf2ab4deee ro quiet splash vt.handoff=7
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: KERNEL supported cpus:
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: Intel GenuineIntel
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: AMD AuthenticAMD
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: Hygon HygonGenuine
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: Centaur CentaurHauls
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: zhaoxin Shanghai
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Supporting XSAVE feature 0x008: 'MPX bounds registers'
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Supporting XSAVE feature 0x010: 'MPX CSR'
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: xstate_offset[3]: 832, xstate_sizes[3]: 64
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: xstate_offset[4]: 896, xstate_sizes[4]: 64
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: x86/fpu: Enabled xstate features 0x1f, context size is 960 bytes, using 'compacted' format.
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-provided physical RAM map:
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x0000000000000000-0x000000000009c7ff] usable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x000000000009c800-0x000000000009ffff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x00000000000e0000-0x00000000000fffff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x0000000000100000-0x000000007671ffff] usable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x0000000076720000-0x0000000076720fff] ACPI NVS
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x0000000076721000-0x000000007674afff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x000000007674b000-0x000000007e171fff] usable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x000000007e172000-0x000000007e475fff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x000000007e476000-0x000000007e676fff] usable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x000000007e677000-0x000000007edc9fff] ACPI NVS
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x000000007edca000-0x000000007f2fefff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x000000007f2ff000-0x000000007f2fffff] usable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x000000007f300000-0x000000007f3fffff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x00000000e0000000-0x00000000efffffff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x00000000fe000000-0x00000000fe010fff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x00000000fec00000-0x00000000fec00fff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x00000000fee00000-0x00000000fee00fff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x00000000ff000000-0x00000000ffffffff] reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: BIOS-e820: [mem 0x0000000100000000-0x000000026effffff] usable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: NX (Execute Disable) protection: active
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: SMBIOS 2.8 present.
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: DMI: To Be Filled By O.E.M. To Be Filled By O.E.M./H110M-HDV, BIOS P1.70 06/21/2016
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: tsc: Detected 3700.000 MHz processor
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: tsc: Detected 3699.850 MHz TSC
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: e820: remove [mem 0x000a0000-0x000fffff] usable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: last_pfn = 0x26f000 max_arch_pfn = 0x400000000
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: MTRR default type: write-back
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: MTRR fixed ranges enabled:
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: 00000-9FFFF write-back
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: A0000-BFFFF uncachable
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: C0000-FFFFF write-protect
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: MTRR variable ranges enabled:
    lip 05 10:17:10 treehuggingoctopus-desktop kernel: 0 base 0080000000 mask 7F80000000 uncachable
    lines 1-54

    No red lines here.

    However, when I run $ lspci -k | grep -EA3 'VGA|3D|Display'

    I get this:

    00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06)
    Subsystem: ASRock Incorporation HD Graphics 530
    Kernel driver in use: i915
    Kernel modules: i915

    And VGA is actually in red here.

  4. #4
    Join Date
    Jul 2021
    Beans
    3

    Re: [20.04.02] Monitor randomly loses connection

    I have tried replacing the monitor, no improvement.

    I have removed 20.04.02, and installed the Hirsute Hippo. Have installed all the updates and upgrades. The problem persists.

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