** Changed in: linux (Ubuntu)
Status: Incomplete = New
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https://bugs.launchpad.net/bugs/1085783
Title:
Kernel Panic
Status in Linux Kernel Bugs:
New
Status in
It happening consistently with NFSv4 on VMWare Host Ubuntu 12.04 LTS
guest system. I've three 12.04 systems and 1 of them is NFS server and 2
of them are NFS clients, mounts directory from server. I build my source
on 12.04 NFS server and run from 2 NFS clients. On few times build and
run seems to
I've same problem with my t440s.
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https://bugs.launchpad.net/bugs/1239578
Title:
No wireless support for Realtek RTL8192EE [10ec:818b]
Status in HWE Next Project:
After continous search for RTL8192EE driver, I found it here.
http://netbook-remix.archive.canonical.com/updates/pool/public/o/oem-
wireless-rtl-92ce-92se-92de-8723ae-88ee-8723be-92ee-dkms/
I'm able to compile and load rtl8192ee on my lenovo t440s laptop.
However, transmitt speed very slow. For
http://www.spinics.net/lists/linux-wireless/msg118429.html
https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-
firmware/+/4164c23d2e3b4863ca42d72f40dc7cc5d9fb8c6c
This commit is made in to firmware mainstream branch. Would that help ?
However I don't see source code, it has
Step 1) I upgraded to 14.04.1 from 13.10 using apt-get upgrade, update-
manager -d.
No LSB modules are available.
Distributor ID: Ubuntu
Description:Ubuntu 14.04.1 LTS
Release:14.04
Codename: trusty
Step 2) Pulled driver code from GIT and built. Loaded via modprobe and added
With 3.13.9 kernel, system freezes completely after 30minutes of uptime
with 8192ee module loaded.
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Title:
No wireless support for
@Varun,
Its very much related to this driver. Unfortunately I'm not able to get
Call Trace from kernel as its completely frozen. Looks like, gets
getting into deadlock. I've build kernel with lock debugs
-rw--- 1 root root 0 Oct 8 23:06 lock_stat
-r--r--r-- 1 root root 0 Oct 8 23:06 locks
Oct 8 23:39:46 laptop-t440s kernel: [ 2990.480801]
rtl8192ee:rtl92ee_set_hw_reg():0-0 switch case not process 1c
Oct 8 23:39:47 laptop-t440s kernel: [ 2990.787430]
rtl8192ee:rtl92ee_set_hw_reg():0-0 switch case not process 1d
Oct 8 23:39:47 laptop-t440s kernel: [ 2990.787785]
[laptop-t440s]09:27:25-user~/Downloads/rtlwifi_new$ git status .
On branch master
Your branch is up-to-date with 'origin/master'.
Untracked files:
(use git add file... to include in what will be committed)
backup_drivers.tar
nothing added to commit but untracked files present (use git
commit 5068371ab982090576c863204b96adc1d03ed462
Author: Larry Finger larry.fin...@lwfinger.net
Date: Thu Oct 2 17:11:29 2014 -0500
rtlwifi_new: Modify Makefile to save drivers before installing new ones
Whe uninstalling the drivers, the saved versions are restored. Firmware is
I've turned off bluetooth and loaded kernel build out of 3.16 release as
per link (http://www.tecmint.com/install-kernel-3-16-in-debian/) with
some more lock debugging.
System is up for 10 hours and i'm using it. So far, It has got 200MB of traffic
(in + out).
[laptop-t440s]10:24:36-user~$
Unfortunately, right after previous post, my system went to hang. I
can't even go to any terminal. Ctrl + Alt + F1 to F12, nothing worked.
Its completely unresponsive. Only option I had to power off manually and
poweron in hard way by pressing power button.
Is there place where I can look for
Larry,
Is there way to test this driver under virtualbox or EXSI based VM? I
could give it a try in that case.
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Title:
No wireless
I could bringup Ubuntu 14.04 under virtualbox and add PCIe (realtek) to
VM using pciattach. Its visiable under Guest OS and after adding
rtl8192ee driver, its able to find PCIe and brings up wlan0 interface.
Its says, Wlan0 link is not ready.
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wlan0 Link encap:Ethernet HWaddr 40:f0:2f:7b:66:b7
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0
01:05.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8192EE PCIe
Wireless Network Adapter
Subsystem: Realtek Semiconductor Co., Ltd. Device 001b
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+
Larry,
I'm trying to see why link state is not coming up in virtualbox loaded
kernel. I don't see call to netif_carrier_on upon sudo modprobe
rtl8192ee. Can you help how is this flow works? For RTL8192EE driver,
how is netif_carrier_on being called and stack trace of that would help
me to see why
I tried with kernel 3.17.0-031700-generic Ubuntu 14.04.1
Things seems to be OK so far.
user1@user-laptop:~$ uname -r
3.17.0-031700-generic
user1@user-laptop:~$ uptime
10:35:15 up 1:51, 3 users, load average: 0.52, 0.41, 0.34
user1@user-laptop:~$ ifconfig wlan2
wlan2 Link encap:Ethernet
Frozen again..
Portion of kern.log attached.
** Attachment added: kern.log
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1239578/+attachment/4235124/+files/freeze.txt
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Oct 13 22:56:27 skannan-dv2k kernel: [ 759.384776] [ cut here
]
Oct 13 22:56:27 skannan-dv2k kernel: [ 759.384809] WARNING: CPU: 0 PID: 3994
at /home/apw/COD/linux/drivers/gpu/drm/i915/intel_display.c:3361
intel_crtc_wait_for_pending_flips+0x11a/0x150 [i915]()
Oct 13
Oct 13 22:49:44 skannan-dv2k kernel: [ 355.976753] wlan2: RX AssocResp from
58:6d:8f:64:22:ff (capab=0x411 status=0 aid=2)
Oct 13 22:49:44 skannan-dv2k kernel: [ 356.016768] wlan2: associated
Oct 13 22:49:44 skannan-dv2k kernel: [ 356.016782] IPv6:
ADDRCONF(NETDEV_CHANGE): wlan2: link becomes
INFO: task kworker/u16:1:3631 blocked for more than 120 seconds.
Tainted: G OE 3.17.0-031700-generic #201410060605
echo 0 /proc/sys/kernel/hung_task_timeout_secs disables this message.
kworker/u16:1 D 0001 0 3631 2 0x
Workqueue: phy0
For some reason, RTL8192EE loses its connection to AP even though things
looks normal from network point of it. After consecutive attempt to
reconnect causing, system freeze. Can it be ?.
IPv6: ADDRCONF(NETDEV_CHANGE): wlan2: link becomes ready
show_signal_msg: 159 callbacks suppressed
@ stano,
I was trying to debug in my system but complete freeze takes away entire
system to be only power off/on.
If you have system which supports IOMMU, you can boot this version of
kernel and PCI passthrough to see where is the freeze. that will be
really useful to find out.
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@ stano,
I meant, boot this version of kernel in Virtualbox, and using IOMMU ,
PCI Passthrough see if things goes normal and freeze after a while.
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@Stano,
I tried in my system(which doesnt have IOMMU VT-D), but wifi itself
wont be up in virtualbox. Its not much useful.
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Title:
I assigned IRQ 48 (RTL_PCI) to CPU 3 via echo 8
/proc/irq/48/smp_affinity
Oct 21 21:00:04 skannan-dv2k kernel: [ 2630.800829] NMI watchdog: BUG: soft
lockup - CPU#3 stuck for 23s! [swapper/3:0]
Oct 21 21:00:04 skannan-dv2k kernel: [ 2630.800833] Modules linked in: ctr ccm
arc4 rtl8192ee(OE)
Good catch. I didn't notice that. I had tried via ndiswrapper before
this driver came along. I have removed ndiswrapper completely now. Let
me try again.
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Output of /proc/interrupts and mpstat.
** Attachment added: rtl_logs.txt
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1239578/+attachment/4242050/+files/rtl_logs.txt
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Output /proc/interrupts.
===
CPU0 CPU1 CPU2 CPU3
0: 34 0 0 0 IO-APIC-edge timer
1:657 4850412509 IO-APIC-edge i8042
8: 1
@Larry,
I retried after removing ndiswrapper. Same result. System frozen after
some time.
Oct 22 14:45:38 skannan-dv2k kernel: [21876.694487] Watchdog[3774]: segfault at
0 ip 7f50cd9651ab sp 7f50bd5
647d0 error 6 in chrome[7f50c9bcb000+4ffd000]
Oct 22 14:46:08 skannan-dv2k kernel:
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