Public bug reported:
After installing latest updates (kernel 4.15.0-29, nvidia-340 etc.)
there is no network after pause/resume.
Restarting network service and/or network-manager does not solve the issue.
Reloading the network driver (Realtek r8169) will solve the issue.
After pause/resume the following error can be found in the kernel log
(dmesg):
...
Jul 31 08:45:24 mcenter NetworkManager[778]: <info> [1533019524.9312] manager:
NetworkManager state is now DISCONNECTED
Jul 31 08:45:26 mcenter kernel: [ 2106.325154] do_IRQ: 1.36 No irq handler for
vector
Jul 31 08:45:27 mcenter ModemManager[736]: <info> Couldn't check support for
device at '/sys/devices/pci0000:00/0000:00:1c.5/0000:04:00.0': not supported by
any plugin
Jul 31 08:46:11 mcenter kernel: [ 2151.465113] Corrupted low memory at
0000000090bf190d (7f00 phys) = 4a4a000000
Jul 31 08:46:11 mcenter kernel: [ 2151.465118] Corrupted low memory at
00000000273f9219 (7f10 phys) = 0fff0000
Jul 31 08:46:11 mcenter kernel: [ 2151.465120] Corrupted low memory at
0000000029d48ce3 (7f20 phys) = 3000000000000
Jul 31 08:46:11 mcenter kernel: [ 2151.465122] Corrupted low memory at
000000008411fa33 (7f28 phys) = 28121283
Jul 31 08:46:11 mcenter kernel: [ 2151.465130] Corrupted low memory at
000000000fe096ef (e1f8 phys) = 400000000000
Jul 31 08:46:11 mcenter kernel: [ 2151.465133] ------------[ cut here
]------------
Jul 31 08:46:11 mcenter kernel: [ 2151.465134] Memory corruption detected in
low memory
...
I tried booting with kernel parameter memmap=1024K$0 but i then get
"Physical KASLR disabled: no suitable memory region!ยจ and the system
won't boot.
I don't know in what package the problem is (kernel, Realtek driver,
suspend/resume??)
output of "uname -a" on my system:
Linux mcenter 4.15.0-29-generic #31~16.04.1-Ubuntu SMP Wed Jul 18 08:54:04 UTC
2018 x86_64 x86_64 x86_64 GNU/Linux
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.15.0-29-generic 4.15.0-29.31~16.04.1
ProcVersionSignature: Ubuntu 4.15.0-29.31~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-29-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Jul 31 11:01:29 2018
InstallationDate: Installed on 2017-04-18 (469 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64
(20170215.2)
SourcePackage: linux-signed-hwe
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux-signed-hwe (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1784593
Title:
No network after pause/resume
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