Malo sam googlal i našel sam 2 -3 posta u kojima neko ima skoro pa isti problem ko i ja samo kaj nitko nije ništ konkretno odgovoril kak to popraviti.
Evo malo podataka iz /var/log/messages
Kad se spojim sa žicom onda internet normalno radi.NetworkManager[598]: <info> Activation (wlan0) starting connection '************'
NetworkManager[598]: <info> (wlan0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
NetworkManager[598]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled...
NetworkManager[598]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started...
NetworkManager[598]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled...
NetworkManager[598]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete.
NetworkManager[598]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting...
NetworkManager[598]: <info> (wlan0): device state change: prepare -> config (reason 'none') [40 50 0]
NetworkManager[598]: <info> Activation (wlan0/wireless): access point '***********' has security, but secrets are required.
NetworkManager[598]: <info> (wlan0): device state change: config -> need-auth (reason 'none') [50 60 0]
NetworkManager[598]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
NetworkManager[598]: <warn> No agents were available for this request.
NetworkManager[598]: <info> (wlan0): device state change: need-auth -> failed (reason 'no-secrets') [60 120 7]
NetworkManager[598]: <warn> Activation (wlan0) failed for access point (*********************)
NetworkManager[598]: <info> Marking connection '*************' invalid.
NetworkManager[598]: <warn> Activation (wlan0) failed.
NetworkManager[598]: <info> (wlan0): device state change: failed -> disconnected (reason 'none') [120 30 0]
NetworkManager[598]: <info> (wlan0): deactivating device (reason 'none') [0]
NetworkManager[598]: <info> Policy set 'System p7p1' (p7p1) as default for IPv4 routing and DNS.
NetworkManager[598]: <info> Policy set 'System p7p1' (p7p1) as default for IPv4 routing and DNS.
NetworkManager[598]: <info> Activation (wlan0) starting connection '***************'
NetworkManager[598]: <info> (wlan0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
NetworkManager[598]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled...
NetworkManager[598]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started...
NetworkManager[598]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled...
NetworkManager[598]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete.
NetworkManager[598]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting...
NetworkManager[598]: <info> (wlan0): device state change: prepare -> config (reason 'none') [40 50 0]
NetworkManager[598]: <info> Activation (wlan0/wireless): access point '***************' has security, but secrets are required.
NetworkManager[598]: <info> (wlan0): device state change: config -> need-auth (reason 'none') [50 60 0]
NetworkManager[598]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
NetworkManager[598]: <warn> No agents were available for this request.
NetworkManager[598]: <info> (wlan0): device state change: need-auth -> failed (reason 'no-secrets') [60 120 7]
NetworkManager[598]: <warn> Activation (wlan0) failed for access point (****************)
NetworkManager[598]: <info> Marking connection '****************' invalid.
NetworkManager[598]: <warn> Activation (wlan0) failed.
NetworkManager[598]: <info> (wlan0): device state change: failed -> disconnected (reason 'none') [120 30 0]
NetworkManager[598]: <info> (wlan0): deactivating device (reason 'none') [0]
NetworkManager[598]: <info> Policy set 'System p7p1' (p7p1) as default for IPv4 routing and DNS.
NetworkManager[598]: <info> Policy set 'System p7p1' (p7p1) as default for IPv4 routing and DNS.
Radi se o ovoj kartici ( bežičnoj)
0e:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8191SEvB Wireless LAN Controller (rev 10)
Subsystem: Realtek Semiconductor Co., Ltd. Device 8181
Flags: bus master, fast devsel, latency 0, IRQ 18
I/O ports at a000
Memory at f0200000 (32-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Legacy Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Virtual Channel
Capabilities: [160] Device Serial Number 88-55-22-fe-ff-4c-e0-00
Kernel driver in use: rtl8192se