OrangePI ONE swich to alternative karnel problem

[Fumio-Koitabashi]

Hi

1. In OrangePI ONE, when you execute swich to alternative karnel (next)
   Swich to display resolution item is gone, it does not become usable.

Currently, swich to alternative karnel (next) is executed

2. When gqrx - sdr modifies blacklist.conf, the following error appears.
   (I think it is a problem of kernel)

fumio @ orangepione: ~ / Desktop $ gqrx
linux; GNU C ++ version 5.3.1 20151219; Boost_ 105800; UHD_003.009.002-0 - unknown

Controlport disabled
No user supplied config file. Using "default.conf"
gr - osmosdr 0.1.4 (0.1.4) gnuradio 3.7.9
built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf rfspace airspy redpitaya
Using Volk machine: neon_hardfp_orc
FM demod gain: 1.52789
IQ DCR alpha: 1.04166e - 05
Using audio backend: N / A
New filter offset: 0 Hz
BookmarksFile is /home/fumio/.config/gqrx/bookmarks.csv
Loading configuration from: "default.conf"
Configuration file: "/home/fumio/.config/gqrx/default.conf"
gr - osmosdr 0.1.4 (0.1.4) gnuradio 3.7.9
built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf rfspace airspy redpitaya
Using device # 0 Generic RTL 2832 U SN: 77771111153705700

Kernel driver is active, or device is held by second instance of librtlsdr.
In the first case, please either detach or blacklist the kernel module
(dvb_usb_rtl 28 x x u), or enable automatic detaching at compile time.

usb_claim_interface error-6

FATAL: Failed to open rtlsdr device.

Trying to fill up 1 missing channel (s) with null source (s).
This is being done done to prevent the application from crashing
due to gnuradio bug # 528.

Please upgrade to fix it, please.