Hello all,
I am trying to share the ethernet connection of my desktop with my laptop by creating a WiFi hotspot. I tried two methods :
- Software (Connectify, etc)
- Command lines ([netsh wlan set hostednetwork mode =allow ssid="ConnectionName" key="Password"] and then [netsh wlan start hostednetwork])
The WiFi network configuration works well but each time I connect my laptop I get a BSOD with error DPC_WATCHDOG-VIOLATION on my desktop. I learned that I had to debug the dump file C:\WINDOWS\MEMORY.DMP so I did it. Here is what I get after trying to connect to a Connectify hotspot :
_____________________________________________________________________________________________________________
DPC_WATCHDOG_VIOLATION (133)
The DPC watchdog detected a prolonged run time at an IRQL of DISPATCH_LEVEL
or above.
Arguments:
Arg1: 0000000000000000, A single DPC or ISR exceeded its time allotment. The offending
component can usually be identified with a stack trace.
Arg2: 0000000000000501, The DPC time count (in ticks).
Arg3: 0000000000000500, The DPC time allotment (in ticks).
Arg4: 0000000000000000
Debugging Details:
------------------
DPC_TIMEOUT_TYPE: SINGLE_DPC_TIMEOUT_EXCEEDED
DEFAULT_BUCKET_ID: WIN8_DRIVER_FAULT
BUGCHECK_STR: 0x133
PROCESS_NAME: Connectify.exe
CURRENT_IRQL: d
ANALYSIS_VERSION: 6.3.9600.16384 (debuggers(dbg).130821-1623) amd64fre
LAST_CONTROL_TRANSFER: from fffff80126f77f7c to fffff80126f53ca0
STACK_TEXT:
fffff801`28ab5e38 fffff801`26f77f7c : 00000000`00000133 00000000`00000000 00000000`00000501 00000000`00000500 : nt!KeBugCheckEx ....
...
STACK_COMMAND: kb
FOLLOWUP_IP:
rtwlanu+53ab3
fffff800`032e0ab3 6644894c2450 mov word ptr [rsp+50h],r9w
SYMBOL_STACK_INDEX: 8
SYMBOL_NAME: rtwlanu+53ab3
FOLLOWUP_NAME: MachineOwner
MODULE_NAME: rtwlanu
IMAGE_NAME: rtwlanu.sys
DEBUG_FLR_IMAGE_TIMESTAMP: 51dd743f
FAILURE_BUCKET_ID: 0x133_DPC_rtwlanu+53ab3
BUCKET_ID: 0x133_DPC_rtwlanu+53ab3
ANALYSIS_SOURCE: KM
FAILURE_ID_HASH_STRING: km:0x133_dpc_rtwlanu+53ab3
FAILURE_ID_HASH: {0c9dbd6c-bd85-2418-2715-6ed1df36a223}
________________________________________________________________________________________________________
According to the line 'IMAGE_NAME: rtwlanu.sys' it seems that the problem come from the WiFi chip of my desktop. It is an external (USB) WiFi adapter (TP-LINK TL-WN821N). The chip number is RTL8192CU (Realtek).
Problem is: I checked on the Realtek website and the driver is up to date (the suggested driver is even older than mine).
How can I fix that ?
Thanks.