Eu tenho uma webcam, um mouse e um adaptador wifi conectados ao mesmo barramento USB na parte de trás do meu computador. Quando executo um programa para utilizar a webcam, tanto a webcam quanto o adaptador wifi param de funcionar e não aparecem no meu computador até que eu o reinicie. No momento em que executo um programa para usar a webcam, o seguinte é registrado em /var/log/kern.log :
Mar 26 23:10:13 doug-kubuntu kernel: [ 121.025527] ehci_hcd 0000:00:12.2: force halt; handshake ffffc9000064a824 00004000 00000000 -> -110 Mar 26 23:10:13 doug-kubuntu kernel: [ 121.025530] ehci_hcd 0000:00:12.2: HC died; cleaning up Mar 26 23:10:13 doug-kubuntu kernel: [ 121.025540] cannot submit urb 1, error -19: no device Mar 26 23:10:13 doug-kubuntu kernel: [ 121.025570] usb 1-2: USB disconnect, device number 3 Mar 26 23:10:13 doug-kubuntu kernel: [ 121.025900] wlan0: deauthenticating from e0:91:f5:ab:2a:f3 by local choice (reason=3) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.136722] ath: phy0: Chip reset failed Mar 26 23:10:13 doug-kubuntu kernel: [ 121.136731] ath: phy0: Unable to reset channel (2462 Mhz) reset status -22 Mar 26 23:10:13 doug-kubuntu kernel: [ 121.136761] ath: phy0: Unable to set channel Mar 26 23:10:13 doug-kubuntu kernel: [ 121.238761] ath: phy0: Chip reset failed Mar 26 23:10:13 doug-kubuntu kernel: [ 121.238771] ath: phy0: Unable to reset hardware; reset status -22 (freq 2462 MHz) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.251867] ath: phy0: Failed to wakeup in 500us Mar 26 23:10:13 doug-kubuntu kernel: [ 121.261871] ath: phy0: Failed to wakeup in 500us Mar 26 23:10:13 doug-kubuntu kernel: [ 121.261876] cfg80211: All devices are disconnected, going to restore regulatory settings Mar 26 23:10:13 doug-kubuntu kernel: [ 121.261878] cfg80211: Restoring regulatory settings Mar 26 23:10:13 doug-kubuntu kernel: [ 121.261880] cfg80211: Calling CRDA to update world regulatory domain Mar 26 23:10:13 doug-kubuntu kernel: [ 121.275777] ath: phy0: Failed to wakeup in 500us Mar 26 23:10:13 doug-kubuntu kernel: [ 121.285766] ath: phy0: Failed to wakeup in 500us Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302587] cfg80211: Updating information on frequency 2412 MHz for a 20 MHz width channel with regulatory rule: Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302598] cfg80211: 2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302604] cfg80211: Updating information on frequency 2417 MHz for a 20 MHz width channel with regulatory rule: Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302609] cfg80211: 2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302613] cfg80211: Updating information on frequency 2422 MHz for a 20 MHz width channel with regulatory rule: Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302618] cfg80211: 2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302622] cfg80211: Updating information on frequency 2427 MHz for a 20 MHz width channel with regulatory rule: Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302627] cfg80211: 2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302630] cfg80211: Updating information on frequency 2432 MHz for a 20 MHz width channel with regulatory ru le: Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302635] cfg80211: 2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302639] cfg80211: Updating information on frequency 2437 MHz for a 20 MHz width channel with regulatory ru le: Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302643] cfg80211: 2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302647] cfg80211: Updating information on frequency 2442 MHz for a 20 MHz width channel with regulatory ru le: Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302652] cfg80211: 2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302655] cfg80211: Updating information on frequency 2447 MHz for a 20 MHz width channel with regulatory ru le: Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302660] cfg80211: 2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302664] cfg80211: Updating information on frequency 2452 MHz for a 20 MHz width channel with regulatory ru le: Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302668] cfg80211: 2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302672] cfg80211: Updating information on frequency 2457 MHz for a 20 MHz width channel with regulatory rule: Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302677] cfg80211: 2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302680] cfg80211: Updating information on frequency 2462 MHz for a 20 MHz width channel with regulatory rule: Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302685] cfg80211: 2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302690] cfg80211: Updating information on frequency 2467 MHz for a 20 MHz width channel with regulatory rule: Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302694] cfg80211: 2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302698] cfg80211: Updating information on frequency 2472 MHz for a 20 MHz width channel with regulatory rule: Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302703] cfg80211: 2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302706] cfg80211: Disabling freq 2484 MHz Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302713] cfg80211: World regulatory domain updated: Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302716] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302721] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302726] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302730] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302735] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.302739] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Mar 26 23:10:13 doug-kubuntu kernel: [ 121.329820] usb 1-2: ath9k_htc: USB layer deinitialized Mar 26 23:10:13 doug-kubuntu kernel: [ 121.329966] usb 1-3: USB disconnect, device number 4 Mar 26 23:10:14 doug-kubuntu kernel: [ 122.020091] timeout: still 1 active urbs on EP #83 Mar 26 23:10:15 doug-kubuntu kernel: [ 123.017801] timeout: still 1 active urbs on EP #83
* Observe que as duas primeiras linhas do log são semelhantes à saída do log quando eu estava usando um hub USB com sintomas idênticos
Eu suspeitava que a webcam estava com defeito, como eu suspeito que um USB hub meu foi . No entanto, se eu conectar a webcam em uma das portas USB montadas na parte frontal do gabinete do computador, posso usá-la bem; meu adaptador wifi ainda funciona, e eu posso usar a webcam no skype.
Mas se eu conectar o adaptador wi-fi na segunda porta USB ao lado da webcam na frente, elas "quebram" quando uso a webcam. Idealmente, eu quero usar apenas as portas USB traseiras para meu adaptador wi-fi e minha webcam. Qual é a causa disso? Minha webcam está com defeito?
informações de hardware:
Atualização: Enquanto eu estava tentando descobrir como "mapear as portas USB para os controladores USB e hubs da placa-mãe", me deparei com a seguinte pergunta no askubuntu, Minhas portas USB param de funcionar aleatoriamente até a reinicialização? e tentaram separadamente acpi=force irqpoll e noacpi em minhas opções de inicialização (adicionado à linha GRUB_CMDLINE_LINUX em /etc/default/grub e depois executou sudo update-grub )
Tags usb webcam wifi-driver