Sranda. Na notebooku to funguje, ak vypnem DHCP a dam fixnu IPv4 adresu.
Akoze verim ze je to v kabelazi/koncovkach.

Dmesg hovori o kabli, pri vypadku pribudnu dva riadky "Downshift occurred...":

[133652.452428] wlp3s0: associated
[133652.463880] IPv6: ADDRCONF(NETDEV_CHANGE): wlp3s0: link becomes ready
[135967.400270] rtw_8822be 0000:03:00.0: timed out to flush queue 1
[139601.130632] rtw_8822be 0000:03:00.0: timed out to flush queue 1
[141149.023252] rtw_8822be 0000:03:00.0: timed out to flush queue 1
[141469.327839] rtw_8822be 0000:03:00.0: timed out to flush queue 1
[141797.806435] rtw_8822be 0000:03:00.0: timed out to flush queue 1
[141799.034499] rtw_8822be 0000:03:00.0: timed out to flush queue 1
[141913.606110] rtw_8822be 0000:03:00.0: firmware failed to restore hardware setting
[143175.326056] rtw_8822be 0000:03:00.0: timed out to flush queue 1
[144370.599558] rtw_8822be 0000:03:00.0: timed out to flush queue 1
[144475.978977] Generic FE-GE Realtek PHY r8169-200:00: Downshift occurred from negotiated speed 1Gbps to actual speed 100Mbps, check cabling!
[144475.979002] r8169 0000:02:00.0 enp2s0: Link is Up - 100Mbps/Full (downshifted) - flow control off
[144475.979036] IPv6: ADDRCONF(NETDEV_CHANGE): enp2s0: link becomes ready
[144479.725254] r8169 0000:02:00.0 enp2s0: Link is Down
[144486.844125] Generic FE-GE Realtek PHY r8169-200:00: Downshift occurred from negotiated speed 1Gbps to actual speed 100Mbps, check cabling!
[144486.844133] r8169 0000:02:00.0 enp2s0: Link is Up - 100Mbps/Full (downshifted) - flow control off
[144490.038709] wlp3s0: deauthenticating from c8:54:4b:8e:79:3d by local choice (Reason: 3=DEAUTH_LEAVING)
[144490.064396] rtw_8822be 0000:03:00.0: sta c8:54:4b:8e:79:3d with macid 0 left
[144495.552077] r8169 0000:02:00.0 enp2s0: Link is Down
[144502.717769] Generic FE-GE Realtek PHY r8169-200:00: Downshift occurred from negotiated speed 1Gbps to actual speed 100Mbps, check cabling!
[144502.717785] r8169 0000:02:00.0 enp2s0: Link is Up - 100Mbps/Full (downshifted) - flow control off
[144516.842946] r8169 0000:02:00.0 enp2s0: Link is Down
[144523.944727] Generic FE-GE Realtek PHY r8169-200:00: Downshift occurred from negotiated speed 1Gbps to actual speed 100Mbps, check cabling!
[144523.944735] r8169 0000:02:00.0 enp2s0: Link is Up - 100Mbps/Full (downshifted) - flow control off