Another attempt: $ cat /etc/modprobe.d/blacklist_i2c-nvidia-gpu.conf # https://askubuntu.com/a/1289997 blacklist i2c_nvidia_gpu
Didn't make any difference. My judgment is that this is NOT a hardware issue, a plain software one indicated by: As the flow of dmesg items ends; if I start tapping ESC ant Enter keys repeatedly I will see the X / Wayland GUI Login screen within 10 seconds. If i do NOT do that key-tapping, then the boot stop just prior to the login screen; screen is black, cursor flashing in upper left corner (at least to begin with), it stays like that indefinitely, after some time cooling fans start blowing - so there appears to be some CPU-intensive thing going on. The only way out of this is holding the power button until power drops off. Looking into the dmesg log, there is nothing after the 10 second mark. What appears after 10 seconds on a tap-a-long-boot doesn't seem to be related, the list isn't long and does not seem to contain any leads into the issue. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1988658 Title: boot stops at black screen (blinking cursor in top left corner); pulseaudio fails to intialize? Status in pulseaudio package in Ubuntu: New Bug description: $ cat /etc/os-release NAME="Ubuntu" VERSION="20.04.5 LTS (Focal Fossa)" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 20.04.5 LTS" VERSION_ID="20.04" HOME_URL="https://www.ubuntu.com/"; SUPPORT_URL="https://help.ubuntu.com/"; BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"; PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"; VERSION_CODENAME=focal UBUNTU_CODENAME=focal 3 to 5 of 10 boot occasions stops prematurely. dmesg (included here, I assume) indicates a pulseaudio failure stopping the booting. I have NOT investigated further (knowledge limit). This very latest bootup seemed to indicate that there is something waiting on the keyboard, as I got all the way "up" after beating repeatedly - alternating - on ESC and ENTER --- dmesg tail on this boot --- 4 sec pause from previous line (at 9 secs) [ 13.444028] xhci_hcd 0000:01:00.2: xHC error in resume, USBSTS 0x401, Reinit [ 13.444031] usb usb3: root hub lost power or was reset [ 13.444032] usb usb4: root hub lost power or was reset [ 13.557170] Lockdown: Xorg: raw io port access is restricted; see man kernel_lockdown.7 [ 13.791732] ACPI Warning: \_SB.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20210331/nsarguments-61) [ 17.001076] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7 [ 17.105681] rfkill: input handler disabled [ 28.694324] Bluetooth: RFCOMM TTY layer initialized [ 28.694328] Bluetooth: RFCOMM socket layer initialized [ 28.694331] Bluetooth: RFCOMM ver 1.11 [ 28.922797] rfkill: input handler enabled [ 29.043050] Lockdown: Xorg: raw io port access is restricted; see man kernel_lockdown.7 [ 31.669031] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7 [ 31.907300] rfkill: input handler disabled [ 41.959736] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7 [ 78.940836] xhci_hcd 0000:01:00.2: xHC error in resume, USBSTS 0x401, Reinit [ 78.940840] usb usb3: root hub lost power or was reset [ 78.940841] usb usb4: root hub lost power or was reset [ 929.174665] xhci_hcd 0000:01:00.2: xHC error in resume, USBSTS 0x401, Reinit [ 929.174669] usb usb3: root hub lost power or was reset [ 929.174671] usb usb4: root hub lost power or was reset -- end --- ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: pulseaudio 1:13.99.1-1ubuntu3.13 ProcVersionSignature: Ubuntu 5.13.0-52.59~20.04.1-generic 5.13.19 Uname: Linux 5.13.0-52-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27.24 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/controlC0', '/dev/snd/hwC0D2', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/by-path', '/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D10p', '/dev/snd/pcmC1D9p', '/dev/snd/pcmC1D8p', '/dev/snd/pcmC1D7p', '/dev/snd/pcmC1D3p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CasperMD5CheckResult: skip Date: Sun Sep 4 08:19:01 2022 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. SourcePackage: pulseaudio Symptom: audio UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/19/2021 dmi.bios.release: 5.13 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: G731GU.312 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: G731GU dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.ec.firmware.release: 0.6 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrG731GU.312:bd02/19/2021:br5.13:efr0.6:svnASUSTeKCOMPUTERINC.:pnROGStrixG731GU_G731GU:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnG731GU:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku: dmi.product.family: ROG Strix dmi.product.name: ROG Strix G731GU_G731GU dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. 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