Kernel 5.0.3-200.fc29 Boot Stall USB Compact Flash
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  1. #1
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    Kernel 5.0.3-200.fc29 Boot Stall USB Compact Flash

    Hi everyone,

    I just updated my desktop to the newest kernel 5.0.3-200.fc29.x86_64 and noticed that it seems to stall for 15 seconds on boot and another 5 seconds when logging in. After looking at the verbose boot output, I noticed it was stuck on "waiting for devices to settle". Specifically it was waiting for /dev/sdd (and possibly /dev/sdf) which is a compact flash reader as part of a multi memory card reader connected by internal usb2. When I unplug the device from the motherboard it boots fine. The previous kernel I had 4.20.16-200.fc29.x86_64 has no issues at all.

    Do I need to set some kernel flags? Has this happened to anyone else? Dmesg outputs from when the multi card reader is and isn't attached are included as well as a screenshot of disk utility showing what /dev/sdd is.
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  2. #2
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    Re: Kernel 5.0.3-200.fc29 Boot Stall USB Compact Flash

    i've noticed the 5.0 kernels cause far more frequent fsck tasks on startup with my SATA SSD in this desktop. Maybe it's doing the same with your flash media? Check the journals if you don't see anything on screen during the delay. In theory silent boot should still quit to display such messages, it does on manjaro which also uses the silent boot code from Fedora. Fedora collaborated with one of the manjaro developers to make this happen.

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    Re: Kernel 5.0.3-200.fc29 Boot Stall USB Compact Flash

    The actual multi card reader has no flash media in it most of the time (including today). I only got it because it was on sale for ~ $10.

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    Re: Kernel 5.0.3-200.fc29 Boot Stall USB Compact Flash

    out of interest, please run the command below and post the model of your card reader. If it matches mine (Bus 001 Device 002: ID 058f:6362 Alcor Micro Corp. Flash Card Reader/Writer), I cannot recreate the issue but someone else may have the same hardware and problem as you.

    Code:
    lsusb

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    Re: Kernel 5.0.3-200.fc29 Boot Stall USB Compact Flash

    Code:
    [Daniel@Daniel8 Desktop]$ lsusb
    Bus 002 Device 002: ID 8087:8002 Intel Corp. 
    Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 008 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 005 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
    Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 001 Device 002: ID 8087:800a Intel Corp. 
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 003 Device 003: ID 8087:07dc Intel Corp. 
    Bus 003 Device 002: ID 046d:c05a Logitech, Inc. M90/M100 Optical Mouse
    Bus 003 Device 004: ID 058f:6362 Alcor Micro Corp. Flash Card Reader/Writer
    Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Apparently it is the same one. If it helps mine is part of a Rosewill 5.25" unit that has a (now dead) usb2 hub, usb3 headers and sata to esata passthrough header.

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    Re: Kernel 5.0.3-200.fc29 Boot Stall USB Compact Flash

    ah, mines a 3.5" form factor one and has just got a single USB 2 pass through next to the card reader slots. I forget the OEM name as it's from 2014 and I didn't keep the paperwork for it since it's cheaper to replace if it goes wrong than return. Have you checked the USB 2 cable is connected properly both ends and not damaged? you may need to open it up for that.

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    Re: Kernel 5.0.3-200.fc29 Boot Stall USB Compact Flash

    The USB2 connection is an internal USB connection that goes straight to the motherboard. When I produced those dmesg dumps, it was pulled out and properly put it back in.

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    Re: Kernel 5.0.3-200.fc29 Boot Stall USB Compact Flash

    I know it's an internal cable but did you just pull that header connection instead of checking both ends? It could be loose at the card reader end. USB 2 internal cables can easily come loose from card readers. Also are there any kinks or signs of splitting or degradation?

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    Re: Kernel 5.0.3-200.fc29 Boot Stall USB Compact Flash

    my $0.02: I have found that enabling amd_iommu=pt (AMD cpu), or iommu=pt (Intel CPU) in the kernel boot line, has fixed my USB issues (since upgrading to FC29).
    "monsters John ... monsters from the ID..."
    "ma vule teva maar gul nol naya"

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