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#1 2015-07-28 21:25:34

steveo_73
Member
Registered: 2012-09-16
Posts: 21

[Solved] Ethernet Down/Wireless Down intermittently

Hi,

My Internet access is extremely poor at the moment. The ethernet adapter does not appear to be working and wireless works but goes down as well.

Some of my error messages are:-

[drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* uncleared pch fifo underrun on pch transcoder A
[    4.414450] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun

And

[drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* uncleared pch fifo underrun on pch transcoder A
[    4.414450] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun

systemctl status dhcpcd@eth0.service
● dhcpcd@eth0.service - dhcpcd on eth0
   Loaded: loaded (/usr/lib/systemd/system/dhcpcd@.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Wed 2015-07-29 07:18:38 AEST; 2min 57s ago
  Process: 353 ExecStart=/usr/bin/dhcpcd -q -w %I (code=exited, status=1/FAILURE)

Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.

Jul 29 07:35:27 archdev NetworkManager[339]: <warn>  (eth0): DHCPv4 request timed out.
Jul 29 07:35:27 archdev NetworkManager[339]: <info>  (eth0): DHCPv4 state changed unknown -> timeout
Jul 29 07:35:27 archdev NetworkManager[339]: <info>  (eth0): canceled DHCP transaction, DHCP client pid 1264
Jul 29 07:35:27 archdev NetworkManager[339]: <info>  (eth0): DHCPv4 state changed timeout -> done
Jul 29 07:35:27 archdev NetworkManager[339]: <info>  (eth0): device state change: ip-config -> failed (reason 'ip-config-unavailable') [70 120 5]
Jul 29 07:35:27 archdev NetworkManager[339]: <info>  startup complete
Jul 29 07:35:27 archdev NetworkManager[339]: <warn>  (eth0): Activation: failed for connection 'Wired connection 1'
Jul 29 07:35:27 archdev NetworkManager[339]: <info>  (eth0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Jul 29 07:35:27 archdev NetworkManager[339]: <info>  Auto-activating connection 'Wired connection 1'.
Jul 29 07:35:27 archdev NetworkManager[339]: <info>  (eth0): Activation: starting connection 'Wired connection 1' (ec26efa6-5764-4c88-b2f4-eb70dcc6b9bb)
Jul 29 07:35:27 archdev NetworkManager[339]: <info>  (eth0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Jul 29 07:35:27 archdev NetworkManager[339]: <info>  (eth0): device state change: prepare -> config (reason 'none') [40 50 0]
Jul 29 07:35:27 archdev NetworkManager[339]: <info>  (eth0): device state change: config -> ip-config (reason 'none') [50 70 0]
Jul 29 07:35:27 archdev NetworkManager[339]: <info>  Activation (eth0) Beginning DHCPv4 transaction (timeout in 45 seconds)
...
Jul 29 07:36:12 archdev NetworkManager[339]: <warn>  (eth0): DHCPv4 request timed out.
Jul 29 07:36:12 archdev NetworkManager[339]: <info>  (eth0): DHCPv4 state changed unknown -> timeout
Jul 29 07:36:12 archdev NetworkManager[339]: <info>  (eth0): canceled DHCP transaction, DHCP client pid 1429
Jul 29 07:36:12 archdev NetworkManager[339]: <info>  (eth0): DHCPv4 state changed timeout -> done
Jul 29 07:36:12 archdev NetworkManager[339]: <info>  (eth0): device state change: ip-config -> failed (reason 'ip-config-unavailable') [70 120 5]
Jul 29 07:36:12 archdev NetworkManager[339]: <warn>  (eth0): Activation: failed for connection 'Wired connection 1'
Jul 29 07:36:12 archdev NetworkManager[339]: <info>  (eth0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Jul 29 07:36:12 archdev NetworkManager[339]: <info>  Auto-activating connection 'Wired connection 1'.
Jul 29 07:36:12 archdev NetworkManager[339]: <info>  (eth0): Activation: starting connection 'Wired connection 1' (ec26efa6-5764-4c88-b2f4-eb70dcc6b9bb)
Jul 29 07:36:12 archdev NetworkManager[339]: <info>  (eth0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Jul 29 07:36:12 archdev NetworkManager[339]: <info>  (eth0): device state change: prepare -> config (reason 'none') [40 50 0]
Jul 29 07:36:12 archdev NetworkManager[339]: <info>  (eth0): device state change: config -> ip-config (reason 'none') [50 70 0]
Jul 29 07:36:12 archdev NetworkManager[339]: <info>  Activation (eth0) Beginning DHCPv4 transaction (timeout in 45 seconds)
Jul 29 07:36:12 archdev NetworkManager[339]: <info>  dhclient started with pid 1590
Jul 29 07:36:12 archdev dhclient[1590]: DHCPREQUEST on eth0 to 255.255.255.255 port 67

Her are some more error messages

Jul 29 07:58:19 archdev NetworkManager[387]: <error> [1438120699.988996] [platform/nm-linux-platform.c:2440] sysctl_set(): platform-linux: sysctl: failed to set '/proc/sys/net/ipv6/conf/wlan0/mtu' to '1500':
Jul 29 07:58:19 archdev NetworkManager[387]: <info>  Policy set 'home_nw 1' (wlan0) as default for IPv6 routing and DNS.
Jul 29 07:58:58 archdev systemd[1]: sys-subsystem-net-devices-interface.device: Job sys-subsystem-net-devices-interface.device/start timed out.
Jul 29 07:58:58 archdev systemd[1]: Timed out waiting for device sys-subsystem-net-devices-interface.device.
-- Subject: Unit sys-subsystem-net-devices-interface.device has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/li … temd-devel
--
-- Unit sys-subsystem-net-devices-interface.device has failed.
--
-- The result is timeout.
Jul 29 07:58:58 archdev systemd[1]: Dependency failed for dhcpcd on interface.

Last edited by steveo_73 (2015-07-29 11:31:49)

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#2 2015-07-29 11:32:39

steveo_73
Member
Registered: 2012-09-16
Posts: 21

Re: [Solved] Ethernet Down/Wireless Down intermittently

I solved this and it had nothing to do with any configuration settings. My connection via ethernet wasn't working as a hardware issue.

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