问题解释
使用 Ubuntu 2.5 年后，我的 wifi 每隔 5 到 10 分钟就会断开一次，需要重新启动才能再次连接。最近它已连接，但数据无法传输，然后当我重新连接时，它以最高速度运行。
我做了什么
人们似乎指出“关闭电源管理”，但这似乎不是正确的命令
user@user:~$ sudo iwconfig ra0 power off
Error for wireless request "Set Power Management" (8B2C) :
SET failed on device wlan1 ; No such device.
硬件
请帮忙。我有一台 hp pavillion g6 笔记本电脑（AMD A6 处理器）
串行通信
02:00.0 Network controller: Ralink corp. RT3290 Wireless 802.11n 1T/1R PCIe
sudo lshw -C 网络
*-network
description: Wireless interface
product: RT3290 Wireless 802.11n 1T/1R PCIe
vendor: Ralink corp.
physical id: 0
bus info: pci@0000:02:00.0
logical name: ra0
version: 00
serial: 1c:3e:84:57:29:a3
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=RALINK WLAN ip=192.168.2.33 latency=0 multicast=yes wireless=Ralink STA
resources: irq:16 memory:f0210000-f021ffff
修改
Module Size Used by
cfg80211 561152 0
bnep 20480 2
rfcomm 69632 0
bluetooth 516096 10 bnep,rfcomm
kvm 536576 0
irqbypass 16384 1 kvm
crct10dif_pclmul 16384 0
crc32_pclmul 16384 0
uvcvideo 90112 0
amdkfd 131072 1
videobuf2_vmalloc 16384 1 uvcvideo
ghash_clmulni_intel 16384 0
videobuf2_memops 16384 1 videobuf2_vmalloc
videobuf2_v4l2 28672 1 uvcvideo
amd_iommu_v2 20480 1 amdkfd
videobuf2_core 36864 2 uvcvideo,videobuf2_v4l2
hp_wmi 16384 0
v4l2_common 16384 1 videobuf2_v4l2
sparse_keymap 16384 1 hp_wmi
videodev 180224 4 uvcvideo,v4l2_common,videobuf2_core,videobuf2_v4l2
media 24576 2 uvcvideo,videodev
aesni_intel 167936 0
joydev 20480 0
input_leds 16384 0
snd_hda_codec_idt 57344 1
aes_x86_64 20480 1 aesni_intel
snd_hda_codec_generic 73728 1 snd_hda_codec_idt
radeon 1503232 3
snd_hda_codec_hdmi 53248 1
lrw 16384 1 aesni_intel
snd_hda_intel 40960 5
snd_hda_codec 135168 4 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_codec_generic,snd_hda_intel
snd_hda_core 73728 5 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel
snd_hwdep 16384 1 snd_hda_codec
gf128mul 16384 1 lrw
snd_pcm 106496 4 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_core
glue_helper 16384 1 aesni_intel
serio_raw 16384 0
ablk_helper 16384 1 aesni_intel
cryptd 20480 3 ghash_clmulni_intel,aesni_intel,ablk_helper
snd_seq_midi 16384 0
snd_seq_midi_event 16384 1 snd_seq_midi
snd_rawmidi 32768 1 snd_seq_midi
k10temp 16384 0
ttm 94208 1 radeon
drm_kms_helper 151552 1 radeon
rt3290sta 1142784 1
drm 360448 6 ttm,drm_kms_helper,radeon
snd_seq 69632 2 snd_seq_midi_event,snd_seq_midi
snd_seq_device 16384 3 snd_seq,snd_rawmidi,snd_seq_midi
snd_timer 32768 2 snd_pcm,snd_seq
rtsx_pci_ms 20480 0
i2c_piix4 24576 0
snd 81920 21 snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_idt,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_seq_device
memstick 20480 1 rtsx_pci_ms
hp_wireless 16384 0
hp_accel 28672 0
i2c_algo_bit 16384 1 radeon
lis3lv02d 20480 1 hp_accel
soundcore 16384 1 snd
fb_sys_fops 16384 1 drm_kms_helper
syscopyarea 16384 1 drm_kms_helper
input_polldev 16384 1 lis3lv02d
sysfillrect 16384 1 drm_kms_helper
sysimgblt 16384 1 drm_kms_helper
wmi 20480 1 hp_wmi
video 40960 0
shpchp 36864 0
parport_pc 36864 0
ppdev 20480 0
lp 20480 0
parport 49152 3 lp,ppdev,parport_pc
mac_hid 16384 0
hid_generic 16384 0
usbhid 49152 0
hid 118784 2 hid_generic,usbhid
rtsx_pci_sdmmc 24576 0
psmouse 131072 0
r8169 81920 0
mii 16384 1 r8169
rtsx_pci 53248 2 rtsx_pci_ms,rtsx_pci_sdmmc
ahci 36864 4
libahci 32768 1 ahci
fjes 28672 0
*消息 | grep 缓存；猫/etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
[ 0.013210] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes)
[ 0.014500] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes)
[ 0.015133] Mount-cache hash table entries: 8192 (order: 4, 65536 bytes)
[ 0.015145] Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes)
[ 4.205779] PCI: pci_cache_line_size set to 64 bytes
[ 4.954299] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[ 5.970887] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
cat: /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf: No such file or directory
modinfo-p rt3290sta
mac:rt28xx: wireless mac addr (charp)
附言
我发过一个类似的问题，9 天后仍无人回答。所以我删除了它，然后再次发帖，用更好的措辞和更好的关键词，并且花了更多时间！