OK, this improves things slightly; the first timeout is gone: [ 0.124444] kernel: pci 0000:07:00.1: Linked as a consumer to 0000:07:00.0 [ 0.124592] kernel: PCI: CLS 64 bytes, default 64 [ 0.124621] kernel: Unpacking initramfs...
But the second (longer) timeout is still there, and now has a trace: [ 4.601812] kernel: usb 1-7: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 28.016007] kernel: watchdog: BUG: soft lockup - CPU#4 stuck for 23s! [swapper/0:1] [ 28.016007] kernel: Modules linked in: [ 28.016007] kernel: CPU: 4 PID: 1 Comm: swapper/0 Not tainted 5.0.0-16-generic #17~lp1830905+2 [ 28.016007] kernel: Hardware name: Gigabyte Technology Co., Ltd. B450M DS3H/B450M DS3H-CF, BIOS F4 01/25/2019 [ 28.016007] kernel: RIP: 0010:xhci_reset+0x7f/0x1a0 [ 28.016007] kernel: Code: 00 00 00 4d 8b 6c 24 18 bb 80 96 98 00 eb 17 a8 02 74 43 bf c7 10 00 00 e8 4e 30 25 00 83 eb 01 0f 84 e9 00 00 00 41 8b 45 00 <83> f8 ff 75 e0 b8 ed ff ff ff 5b 41 5c 41 5d 5d c3 48 8b 07 48 c7 [ 28.016007] kernel: RSP: 0018:ffffacb30004bad0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 28.016007] kernel: RAX: 0000000000000002 RBX: 0000000000050ef2 RCX: 0000000000000002 [ 28.016007] kernel: RDX: 00000000000013d4 RSI: 00000024d0b051d8 RDI: 0000000000000ded [ 28.016007] kernel: RBP: ffffacb30004bae8 R08: 00000000ffffffff R09: 0000000000000000 [ 28.016007] kernel: R10: 0000000000000002 R11: 000000000000000f R12: ffff89803bf62230 [ 28.016007] kernel: R13: ffffacb302480020 R14: ffffffff8bbddee0 R15: ffff89803bf62230 [ 28.016007] kernel: FS: 0000000000000000(0000) GS:ffff89804eb00000(0000) knlGS:0000000000000000 [ 28.016007] kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.016007] kernel: CR2: 00007f3995075e04 CR3: 00000001ec00e000 CR4: 00000000003406e0 [ 28.016007] kernel: Call Trace: [ 28.016007] kernel: xhci_gen_setup+0x224/0x3e0 [ 28.016007] kernel: ? pci_bus_read_config_byte+0x40/0x60 [ 28.016007] kernel: xhci_pci_setup+0x56/0x120 [ 28.016007] kernel: usb_add_hcd+0x2cb/0x8a0 [ 28.016007] kernel: usb_hcd_pci_probe+0x283/0x480 [ 28.016007] kernel: xhci_pci_probe+0x30/0x230 [ 28.016007] kernel: local_pci_probe+0x47/0xa0 [ 28.016007] kernel: pci_device_probe+0x145/0x1b0 [ 28.016007] kernel: really_probe+0xfe/0x3f0 [ 28.016007] kernel: ? set_debug_rodata+0x17/0x17 [ 28.016007] kernel: driver_probe_device+0x11a/0x130 [ 28.016007] kernel: __driver_attach+0xe3/0x110 [ 28.016007] kernel: ? driver_probe_device+0x130/0x130 [ 28.016007] kernel: ? driver_probe_device+0x130/0x130 [ 28.016007] kernel: bus_for_each_dev+0x74/0xb0 [ 28.016007] kernel: ? kmem_cache_alloc_trace+0x1a6/0x1c0 [ 28.016007] kernel: driver_attach+0x1e/0x20 [ 28.016007] kernel: bus_add_driver+0x167/0x260 [ 28.016007] kernel: ? xhci_debugfs_create_root+0x25/0x25 [ 28.016007] kernel: driver_register+0x60/0x100 [ 28.016007] kernel: ? xhci_debugfs_create_root+0x25/0x25 [ 28.016007] kernel: __pci_register_driver+0x5a/0x60 [ 28.016007] kernel: xhci_pci_init+0x47/0x49 [ 28.016007] kernel: do_one_initcall+0x4a/0x1c9 [ 28.016007] kernel: kernel_init_freeable+0x1cb/0x272 [ 28.016007] kernel: ? rest_init+0xb0/0xb0 [ 28.016007] kernel: kernel_init+0xe/0x110 [ 28.016007] kernel: ret_from_fork+0x22/0x40 [ 28.874267] kernel: xhci_hcd 0000:07:00.2: can't setup: -110 [ 28.874275] kernel: xhci_hcd 0000:07:00.2: USB bus 3 deregistered [ 28.874312] kernel: xhci_hcd 0000:07:00.2: init 0000:07:00.2 fail, -110 [ 28.874314] kernel: xhci_hcd: probe of 0000:07:00.2 failed with error -110 I've done a bit of digging regarding the USB bus; I believe it's present to support a USB-C port which some RTX 2060 cards do have, but my specific model _does not_ have. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1830905 Title: Nvidia RTX 2060 USB bus timeouts cause ~30s delay in boot Status in linux package in Ubuntu: Confirmed Bug description: From dmesg: [ 0.132667] kernel: pci 0000:07:00.1: Linked as a consumer to 0000:07:00.0 [ 5.882727] kernel: pci 0000:07:00.2: xHCI HW not ready after 5 sec (HC bug?) status = 0x801 [ 5.882781] kernel: pci 0000:07:00.2: quirk_usb_early_handoff+0x0/0x6a6 took 5615333 usecs <snip> [ 9.984204] kernel: usb 1-7: new full-speed USB device number 4 using xhci_hcd [ 10.308689] kernel: usb 1-7: New USB device found, idVendor=8087, idProduct=0a2b, bcdDevice= 0.10 [ 10.308690] kernel: usb 1-7: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 34.654721] kernel: xhci_hcd 0000:07:00.2: can't setup: -110 [ 34.654730] kernel: xhci_hcd 0000:07:00.2: USB bus 3 deregistered [ 34.654769] kernel: xhci_hcd 0000:07:00.2: init 0000:07:00.2 fail, -110 [ 34.654771] kernel: xhci_hcd: probe of 0000:07:00.2 failed with error -110 $ lspci -k -s 0000:07:00 07:00.0 VGA compatible controller: NVIDIA Corporation TU106 [GeForce RTX 2060 Rev. A] (rev a1) Subsystem: Gigabyte Technology Co., Ltd TU106 Kernel driver in use: nvidia Kernel modules: nvidiafb, nouveau, nvidia_drm, nvidia 07:00.1 Audio device: NVIDIA Corporation TU106 High Definition Audio Controller (rev a1) Subsystem: Gigabyte Technology Co., Ltd TU106 High Definition Audio Controller Kernel driver in use: snd_hda_intel Kernel modules: snd_hda_intel 07:00.2 USB controller: NVIDIA Corporation TU106 USB 3.1 Host Controller (rev a1) Subsystem: Gigabyte Technology Co., Ltd TU106 USB 3.1 Host Controller 07:00.3 Serial bus controller [0c80]: NVIDIA Corporation TU106 USB Type-C Port Policy Controller (rev a1) Subsystem: Gigabyte Technology Co., Ltd TU106 USB Type-C Port Policy Controller Kernel driver in use: nvidia-gpu Kernel modules: i2c_nvidia_gpu ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: linux-image-5.0.0-15-generic 5.0.0-15.16 ProcVersionSignature: Ubuntu 5.0.0-15.16-generic 5.0.6 Uname: Linux 5.0.0-15-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: daniel 4470 F.... pulseaudio /dev/snd/controlC1: daniel 4470 F.... pulseaudio /dev/snd/controlC2: daniel 4470 F.... pulseaudio CurrentDesktop: i3 Date: Wed May 29 09:36:51 2019 InstallationDate: Installed on 2019-05-07 (21 days ago) InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210) MachineType: Gigabyte Technology Co., Ltd. B450M DS3H ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.0.0-15-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash resume=UUID=73909634-a75d-42c9-8f66-a69138690756 vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-5.0.0-15-generic N/A linux-backports-modules-5.0.0-15-generic N/A linux-firmware 1.179 SourcePackage: linux UpgradeStatus: Upgraded to eoan on 2019-05-08 (20 days ago) dmi.bios.date: 01/25/2019 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F4 dmi.board.asset.tag: Default string dmi.board.name: B450M DS3H-CF dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF4:bd01/25/2019:svnGigabyteTechnologyCo.,Ltd.:pnB450MDS3H:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnB450MDS3H-CF:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring: dmi.product.family: Default string dmi.product.name: B450M DS3H dmi.product.sku: Default string dmi.product.version: Default string dmi.sys.vendor: Gigabyte Technology Co., Ltd. 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