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jt1122

Member

Registered: 2023-11-18

Posts: 6

RTL8188SU based wifi dongle - connect but can't ping/browse

Hi,

I'm trying to use a Planex wifi dongle based on the RTL8188SU chipset.
It connect to the hotspot & obtains a correct IP address.
ping works for about 10 seconds & then "host is unreachable". The same for browsing.
So the problem seems to be with the module r8712u (the dongle works fine under Windows).

I've created /etc/NetworkManager/conf.d/powersave:

[connection]
wifi.powersave = 2

modinfo -p r8712u gives:

modinfo -p r8712u
wifi_test: (int)
video_mode: (int)
chip_version: (int)
rfintfs: (int)
lbkmode: (int)
hci: (int)
network_mode: (int)
channel: (int)
mp_mode: (int)
wmm_enable: (int)
vrtl_carrier_sense: (int)
vcs_type: (int)
busy_thresh: (int)
ht_enable: (int)
cbw40_enable: (int)
ampdu_enable: (int)
rf_config: (int)
power_mgnt: (int)
low_power: (int)

Any suggestions what parameters values can help?
Any other tweaks?.

Thanks

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 76,065

Re: RTL8188SU based wifi dongle - connect but can't ping/browse

So the problem seems to be with the module r8712u (the dongle works fine under Windows).

What do you base that deduction on?

Ceterum censeo: 3rd link below. Mandatory.
Disable it (it's NOT the BIOS setting!) and reboot windows and linux twice for voodo reasons.
Then please post the output of

find /etc/systemd -type l -exec test -f {} \; -print | awk -F'/' '{ printf ("%-40s | %s\n", $(NF-0), $(NF-1)) }' | sort -f

and please post your complete system journal for a boot after the connection loss:

sudo journalctl -b | curl -F 'file=@-' 0x0.st

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jt1122

Member

Registered: 2023-11-18

Posts: 6

Re: RTL8188SU based wifi dongle - connect but can't ping/browse

What do you base that deduction on?

Before posting I've tested the machine with an Edimax dongle & everything worked fine, so it's likely due to a buggy HW support (=module).

I've tweaked some of the module's params & it seems to be working OK so far.

If any issues arise I'll update.

Cheers

loqs

Member

Registered: 2014-03-06

Posts: 18,928

Re: RTL8188SU based wifi dongle - connect but can't ping/browse

I've tweaked some of the module's params & it seems to be working OK so far.

Could you share those settings?  Life_is_a_two-way_street

jt1122

Member

Registered: 2023-11-18

Posts: 6

Re: RTL8188SU based wifi dongle - connect but can't ping/browse

Could you share those settings?

Sure.
power_mgnt=0
ht_enable=0