I've seen similar issues caused by USB persist. Try disabling it (echo 0 > /sys/bus/usb/devices/<your card reader>/power/persist), and then resuming. On 01/01/2018 10:53 PM, Samuel Sadok wrote: > Hello! > > I'm observing a bug where the most prominent symptom is that the > built-in SD card reader disappears after waking up from suspend. > > Laptop: MacBookPro11,3 > USB controller: Intel Corporation 8 Series/C220 Series Chipset Family > USB xHCI (rev 05) (prog-if 30 [XHCI]) > SD card reader: Apple Card Reader 05ac:8406 > > The bug was reported previously on bugzilla but never followed up on: > https://bugzilla.kernel.org/show_bug.cgi?id=111201 > > > Steps to reproduce: > $ lsusb > Bus 002 Device 002: ID 05ac:8406 Apple, Inc. > Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub > Bus 001 Device 006: ID 05ac:8289 Apple, Inc. > Bus 001 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub > (part of BCM2046 Bluetooth) > Bus 001 Device 003: ID 05ac:0263 Apple, Inc. Apple Internal Keyboard / > Trackpad (MacBook Retina) > Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > $ sudo systemctl suspend > [Wait 10s, then wake the system up] > $ lsusb > Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub > Bus 001 Device 006: ID 05ac:8289 Apple, Inc. > Bus 001 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub > (part of BCM2046 Bluetooth) > Bus 001 Device 003: ID 05ac:0263 Apple, Inc. Apple Internal Keyboard / > Trackpad (MacBook Retina) > Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > $ lsusb -vvv > > Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub > [long hang, on the order of three minutes] > can't get hub descriptor, LIBUSB_ERROR_TIMEOUT (Resource temporarily > unavailable) > [and a couple of more errors] > > Expected result: > The output of both lsusb commands should be equal. > > Actual results: > - The SD card reader (05ac:8406) is missing from the second lsusb. > - Running lsusb -vvv hangs for a long time > - lots of error messages in kernel log > > Logs: > https://gist.github.com/samuelsadok/6d7b3e3015d3370a92ed4702e4d3c4b5 > > I'm happy to provide more data, do tests or patch around the kernel if it helps. > > Best, > Samuel > -- > To unsubscribe from this list: send the line "unsubscribe linux-usb" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
