r8168 conexão cai aleatoriamente

Question

Eu tenho uma placa ethernet Realtek RTL8168 embutida em meu computador (HP ProBook 455 G1), rodando Linux Mint 17.2 Cinnamon 64bits.

Antes de me dizer para substituir o módulo r8169 pré-instalado com o r8168 do site da Realtek, deixe-me dizer que já fiz isso. Eu baixei a versão 8.040.00, sendo a última versão do driver da família R8168, do site da Realtek, compilei e instalei, coloquei na lista negra r8169 e carreguei r8168 .

Desde então eu posso navegar a toda velocidade (sendo a limitação de 15 MB / s pelo meu ISP), mas a conexão é descartada regularmente. Apenas puxando o cabo Ethernet e reconectando-o, posso restaurar a conexão. Reiniciar o serviço NetworkManager, que foi bastante sugerido em vez de reconfigurar o cabo, não tem nenhum efeito.

Além disso, não há saída que julgue relevante em nenhum arquivo de log que eu saiba, sendo /var/log/dmesg ou /var/log/kern.log e /var/log/syslog . Ainda assim, adicionarei partes deles à pergunta.

Tudo que encontrei até agora on-line foi um monte de postagens independentes, todas dizendo como substituir r8169 por r8168 . Então eu não pude encontrar nenhuma ajuda lá, como eu já tinha feito isso.

$ lspci | grep Ethernet
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)

$ uname -r
3.16.0-38-generic

$ modinfo r8168
filename:       /lib/modules/3.16.0-38-generic/kernel/drivers/net/ethernet/realtek/r8168.ko
version:        8.040.00-NAPI
license:        GPL
description:    RealTek RTL-8168 Gigabit Ethernet driver
author:         Realtek and the Linux r8168 crew <[email protected]>
srcversion:     BC1CAF8ECC36006913B85E5
alias:          pci:v00001186d00004300sv00001186sd00004B10bc*sc*i*
alias:          pci:v000010ECd00008168sv*sd*bc*sc*i*
depends:        
vermagic:       3.16.0-38-generic SMP mod_unload modversions 
parm:           speed:force phy operation. Deprecated by ethtool (8). (ushort)
parm:           duplex:force phy operation. Deprecated by ethtool (8). (int)
parm:           autoneg:force phy operation. Deprecated by ethtool (8). (int)
parm:           aspm:Enable ASPM. (int)
parm:           s5wol:Enable Shutdown Wake On Lan. (int)
parm:           rx_copybreak:Copy breakpoint for copy-only-tiny-frames (int)
parm:           timer_count:Timer Interrupt Interval. (int)
parm:           eee_enable:Enable Energy Efficient Ethernet. (int)
parm:           hwoptimize:Enable HW optimization function. (ulong)
parm:           debug:Debug verbosity level (0=none, ..., 16=all) (int)

$ dmesg
[   32.996712] r8168: eth0: link up
[   32.996784] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[  622.150591] r8168: eth0: link down
[  631.189380] r8168: eth0: link up
[ 3246.733396] r8168: eth0: link down
[ 3257.772281] r8168: eth0: link up
[ 3391.778415] r8168: eth0: link down
[ 3404.817620] r8168: eth0: link up
[ 3466.839390] r8168: eth0: link down
[ 3474.878029] r8168: eth0: link up
[ 3806.935588] perf interrupt took too long (2510 > 2500), lowering kernel.perf_event_max_sample_rate to 50000

Tenha em atenção que todos estes link up e link down são provenientes da replicação do cabo, não da falha da ligação.

$ cat /var/log/syslog
Jul  6 22:30:39 dracarys NetworkManager[950]: <info> (eth0): DHCPv4 state changed nbi -> preinit
Jul  6 22:30:39 dracarys dhclient: Listening on LPF/eth0/28:80:23:06:a2:a2
Jul  6 22:30:39 dracarys dhclient: Sending on   LPF/eth0/28:80:23:06:a2:a2
Jul  6 22:30:39 dracarys dhclient: Sending on   Socket/fallback
Jul  6 22:30:39 dracarys dhclient: DHCPREQUEST of 192.168.178.57 on eth0 to 255.255.255.255 port 67 (xid=0x3bac08d5)
Jul  6 22:30:39 dracarys dhclient: DHCPACK of 192.168.178.57 from 192.168.178.1
Jul  6 22:30:39 dracarys dhclient: bound to 192.168.178.57 -- renewal in 353258 seconds.
Jul  6 22:30:39 dracarys NetworkManager[950]: <info> (eth0): DHCPv4 state changed preinit -> reboot
Jul  6 22:30:39 dracarys NetworkManager[950]: <info>   address 192.168.178.57
Jul  6 22:30:39 dracarys NetworkManager[950]: <info>   prefix 24 (255.255.255.0)
Jul  6 22:30:39 dracarys NetworkManager[950]: <info>   gateway 192.168.178.1
Jul  6 22:30:39 dracarys NetworkManager[950]: <info>   nameserver '192.168.178.1'
Jul  6 22:30:39 dracarys NetworkManager[950]: <info>   domain name 'fritz.box'
Jul  6 22:30:39 dracarys NetworkManager[950]: <info> Activation (eth0) Stage 5 of 5 (IPv4 Configure Commit) scheduled...
Jul  6 22:30:39 dracarys NetworkManager[950]: <info> Activation (eth0) Stage 5 of 5 (IPv4 Commit) started...
Jul  6 22:30:39 dracarys avahi-daemon[954]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.178.57.
Jul  6 22:30:39 dracarys avahi-daemon[954]: New relevant interface eth0.IPv4 for mDNS.
Jul  6 22:30:39 dracarys avahi-daemon[954]: Registering new address record for 192.168.178.57 on eth0.IPv4.
Jul  6 22:30:40 dracarys NetworkManager[950]: <info> (eth0): device state change: ip-config -> secondaries (reason 'none') [70 90 0]
Jul  6 22:30:40 dracarys NetworkManager[950]: <info> Activation (eth0) Stage 5 of 5 (IPv4 Commit) complete.
Jul  6 22:30:40 dracarys NetworkManager[950]: <info> (eth0): device state change: secondaries -> activated (reason 'none') [90 100 0]
Jul  6 22:30:40 dracarys NetworkManager[950]: <info> NetworkManager state is now CONNECTED_GLOBAL
Jul  6 22:30:40 dracarys NetworkManager[950]: <info> Policy set 'Wired connection 1' (eth0) as default for IPv4 routing and DNS.
Jul  6 22:30:40 dracarys NetworkManager[950]: <info> Writing DNS information to /sbin/resolvconf
Jul  6 22:30:40 dracarys dnsmasq[4981]: setting upstream servers from DBus
Jul  6 22:30:40 dracarys dnsmasq[4981]: using nameserver 192.168.178.1#53
Jul  6 22:30:40 dracarys dnsmasq[4981]: using nameserver 8.8.4.4#53
Jul  6 22:30:40 dracarys dnsmasq[4981]: using nameserver 8.8.8.8#53
Jul  6 22:30:40 dracarys NetworkManager[950]: <info> Activation (eth0) successful, device activated.
Jul  6 22:30:41 dracarys avahi-daemon[954]: Joining mDNS multicast group on interface eth0.IPv6 with address fe80::2a80:23ff:fe06:a2a2.
Jul  6 22:30:41 dracarys avahi-daemon[954]: New relevant interface eth0.IPv6 for mDNS.
Jul  6 22:30:41 dracarys avahi-daemon[954]: Registering new address record for fe80::2a80:23ff:fe06:a2a2 on eth0.*.
Jul  6 22:30:47 dracarys ntpdate[30658]: adjust time server 91.189.89.199 offset 0.004269 sec
Jul  6 22:31:00 dracarys NetworkManager[950]: <info> (eth0): IP6 addrconf timed out or failed.
Jul  6 22:31:00 dracarys NetworkManager[950]: <info> Activation (eth0) Stage 4 of 5 (IPv6 Configure Timeout) scheduled...
Jul  6 22:31:00 dracarys NetworkManager[950]: <info> Activation (eth0) Stage 4 of 5 (IPv6 Configure Timeout) started...
Jul  6 22:31:00 dracarys NetworkManager[950]: <info> Activation (eth0) Stage 4 of 5 (IPv6 Configure Timeout) complete.
Jul  6 22:36:11 dracarys kernel: [ 3806.935588] perf interrupt took too long (2510 > 2500), lowering kernel.perf_event_max_sample_rate to 50000

Por favor, deixe-me saber se você precisar de mais informações.