우분투 16으로 업그레이드했는데 Wi-Fi가 작동하지 않아 문제가 발생하고 개발을 시도할 때 "장치가 준비되지 않았습니다"라는 메시지가 표시됩니다.
$sudo ip link set wlo1 up
RTNETLINK answers: Operation not possible due to RF-kill
기기가 차단되어 있어서 차단을 해제했는데 다른 메시지가 왔어요
$sudo rfkill unblock wifi
sudo ip link set wlo1 up
RTNETLINK answers: Input/output error
모듈 로딩에 문제가 있는 걸 발견했어요RT2800pci그리고 출력dmesg해당 오류가 포함되어 있습니다
[ 1418.415901] ieee80211 phy0: rt2800_wait_wpdma_ready: Error - WPDMA TX/RX busy [0x00000068]
[ 1420.015845] ieee80211 phy0: rt2800_wait_wpdma_ready: Error - WPDMA TX/RX busy [0x00000068]
[ 1420.015851] ieee80211 phy0: rt2800pci_set_device_state: Error - Device failed to enter state 4 (-5)
[ 1421.635703] ieee80211 phy0: rt2800_wait_wpdma_ready: Error - WPDMA TX/RX busy [0x00000068]
[ 1423.235726] ieee80211 phy0: rt2800_wait_wpdma_ready: Error - WPDMA TX/RX busy [0x00000068]
[ 1423.235733] ieee80211 phy0: rt2800pci_set_device_state: Error - Device failed to enter state 4 (-5)
[ 1424.851615] ieee80211 phy0: rt2800_wait_wpdma_ready: Error - WPDMA TX/RX busy [0x00000068]
[ 1426.451591] ieee80211 phy0: rt2800_wait_wpdma_ready: Error - WPDMA TX/RX busy [0x00000068]
[ 1426.451597] ieee80211 phy0: rt2800pci_set_device_state: Error - Device failed to enter state 4 (-5)
[ 1437.995145] ieee80211 phy0: rt2800_wait_wpdma_ready: Error - WPDMA TX/RX busy [0x00000068]
[ 1439.599083] ieee80211 phy0: rt2800_wait_wpdma_ready: Error - WPDMA TX/RX busy [0x00000068]
[ 1439.599089] ieee80211 phy0: rt2800pci_set_device_state: Error - Device failed to enter state 4 (-5)
[ 1441.215039] ieee80211 phy0: rt2800_wait_wpdma_ready: Error - WPDMA TX/RX busy [0x00000068]
[ 1442.814958] ieee80211 phy0: rt2800_wait_wpdma_ready: Error - WPDMA TX/RX busy [0x00000068]
[ 1442.814964] ieee80211 phy0: rt2800pci_set_device_state: Error - Device failed to enter state 4 (-5)
커널 버전 4.4를 사용하고 있었습니다. 4.5로 변경하려고 했지만 문제가 여전히 해결되지 않았습니다.
uname -a
Linux PC 4.5.0-040500-generic #201603140130 SMP Mon Mar 14 05:32:22 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux