Как восстановить зашифрованную резервную копию deja-dup из новой установки? [закрыто]
Если ответ @ Chili555 не работает для вас, вы можете просто испытывать радиопомехи, шум платформы AKA. Это часто встречается в диапазоне 2,4 ГГц. Вот цитата из https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi
О шуме платформы:
Wi-Fi heavily relies on radio frequencies, and those are subject to
interference. Interference may come from another Wi-Fi device, or from many
other non Wi-Fi devices (e.g. microwaves) that operates on the same frequency,
and it might also come from other components of your own device/computer –
this is known as 'platform noise'. Platform noise depends on the actual
platform/computer and its design/manufacturing, and not on the Intel Wi-Fi
module.
Some common sources of platform noise might be:
The PCIe bus, especially when switching in/out of power saving modes.
USB3 and graphics (in certain scenarios).
Sometimes, even the fact that several ingredients’ ground lines are
connected can cause noise.
This kind of interference might happen on 2.4GHz band, it is much less likely
to happen on 5.2GHz band. Also note that using 40MHz (and not 20MHz) channel
bandwidth will increase the probability to suffer from platform noise
(since more frequencies might impact the Wi-Fi performance).
Some potential work-around options to this issue:
Disable Wi-Fi's power save (prevent the PCIe link to go to power save):
power_scheme=1 module parameter for iwlmvm
Disable USB3 in BIOS (if possible), it not, just stop using it
Disable 40MHz on 2.4GHz: cfg80211_disable_40mhz_24ghz module parameter
Use 5GHz band (on devices that support 5GHz operation)
The fact that one of these options helped doesn't prove that the issue being
troubleshooted is 'platform noise', but it may be an indication.
Another thing that can be tried is to modify the antenna position. The antennas
are typically located in the lid of the laptop. It is worth trying to
open / close the lid or to rotate the system and see if it has any effect.
2
задан Steffen Christensen
28 February 2013 в 01:16
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