Power supply freezes after running vi second time

Hello,
I am just starting my adventures in brave new world of LabView and I run into a problem with my first serious vi which is controling CPX400DP power supply and DPO4104 oscyloscope.
What my vi should be doing:
First it sets current levels of both channels of power supply (e.g. 5V on first, 0V on second) and size of the jump (e.g. 0.5V). Then vi should change both current levels by size of the jump and repeat till the current levels of both channels would be reverse to the start value (in this case, 0V on first channel, 5V on second). Also before every current change the vi would save to file mean of measurements out of the waveform from oscyloscope.
What my vi is doing:
At first run it seems that it's doing everything in order (new text file with resonable numbers is created). However, when I try to run the vi a second time my power supply freezes short after few current changes. I can stop the execution of the vi in LabView (it does take a while though) but to successfully run the vi again I must reset my power supply (turn it off and on).
I tried to go around this problem by modyfing the vi in a way that it would do what I want multiple times during running the vi only once but unfortunately that didn't work.
If anyone would have any suggestions about what I am doing wrong or how to help fix this problem feel free to share I don't bite... much But seriously, I'm stuck with this problem for over a week and I'll be glad for any tips
Thanks!
Waldek.
PS Sorry if I am not clear somewhere but I'm not used to talk about programing in English
PSS In attachments are my main vi and two sub vis.
Solved!
Go to Solution.
Attachments:
controling_power_supply_NEW.vi ‏29 KB
current_changer.vi ‏17 KB
waveform_reader_saver.vi ‏21 KB

Revan-Ghost wrote:
Thanks for a suggestion Bill but could you elaborate a bit on "try inserting ;*OPC? after every setup command"? I understand what that would do, concept wise, but as a new user I don't know how to do that in LabView. And Good Uncle Google doesn't say anything about " ;*OPC? " and insist on talking about OPC servers instead.
I'm sorry - I was looking at the manual and failed to realize that the missing subVIs from your code were actually drivers for your power supply, so you may not be able to implement this (unless the drivers themselves have the "Operation Complete" capability - hopefully the drivers came with documentation). Else, you may be stuck having to hardcode waits after each command.
If you wrote your own drivers, this is how you would send the command to set output 1 to 1 Volt:
V1 1;*OPC?
The V1 1 sets your voltage to 1 Volt. To tack on another command, you use the semicolon. The *OPC? command forces it to return send a "1." SInce the commands are acted upon sequentially, the power supply can't send the "1" until it is done processing the command to set it to 1 Volt. After that command is complete, the "1" is sent, you read the 1 out of the buffer and move on. This avoids issues where you pile on too many commands at once. I checked the manual and it supports this feature.
Bill
(Mid-Level minion.)
My support system ensures that I don't look totally incompetent.
Proud to say that I've progressed beyond knowing just enough to be dangerous. I now know enough to know that I have no clue about anything at all.

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HD1: 90
HD2: 90
HD3: 92
HD4: 92
CPUA: 88
CPUA: 86
CPUB: 88
CPUB: 86
Ambient: 76
Expansion Slots: 94
HD Bay1: 83
HD Bay2: 83
HD Bay3: 83
Hd Bay4: 81
Mem Bank A1: 106
Mem Bank A2: 99
Mem Bank A3: 99
Mem Bank B1: 92
Mem Bank B2: 92
Mem Bank B3: 94
Mem Module A1: 130
Mem Module A2: 126
Northbridge: 106
FAN SPEED (rpm)
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Exhaust: 600
CPU Fan: 500
HD/Expansion: 800
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Model Identifier: MacPro3,1
Processor Name: Quad-Core Intel Xeon
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Total Number Of Cores: 8
L2 Cache (per processor): 12 MB
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Message was edited by: laburke

Wow, thank you so much for the detailed response. I'm actually feeling a little bit of hope that we might get this figured out eventually!
iChat 3.x at both ends.
Can Login and show Buddy Lists
Can Send Visible Invites.
Can Start Video Chat but something says the Bandwidth is then not good enough.
Error Message.
All true, except she has never been able to see me unless we're both in the same my house.
The Intranet /LAN setting in Tiger for iChat 3 also returns Odd figures to
iChat so we have long said set it to 1.5Mbps which your last post says it is.
I take it you must have restarted iChat f not the Mac(s) since you changed
this setting ? (Just covering all bases)
Right.
Have you changed the range the SMC uses to miss the range the modem is using ?
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Subnet Mask: 255.255.255.0
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On the Port Forward site there are two WebSTARs listed under
Scientic Atlanta
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No, it is a DPC2100.
I could also do with seeing an old log of an Error 20 log.
They are stored in You Home Folder/Library/Logs/iChatConnectionErrors
Can you post the bits down and only down to the line that starts "Binary Images for iChat"
Pasted at bottom of this post.
Can you tell me if there is a Wifi and Ethernet connection to the Router ? (at > the same time )
My husband's PC is connected to the router via Ethernet. The only other things connected to it are the modem and my Airport Express so I can get online with my Macs. (I used to have the iMac connected by Ethernet before I realized I had an Airport card. Duh.)
Thanks so much for your patience and help!
Here's the chat log:
Date/Time: 2010-01-29 14:05:49.036 -0600
OS Version: 10.4.11 (Build 8S165)
Report Version: 4
iChat Connection Log:
AVChat started with ID 2853609893.
0x63bb350: State change from AVChatNoState to AVChatStateWaiting.
Laura Macburke2: State change from AVChatNoState to AVChatStateInvited.
0x63bb350: State change from AVChatStateWaiting to AVChatStateConnecting.
Laura Macburke2: State change from AVChatStateInvited to AVChatStateConnecting.
0x63bb350: State change from AVChatStateConnecting to AVChatStateConnected.
Laura Macburke2: State change from AVChatStateConnecting to AVChatStateConnected.
0x63bb350: State change from AVChatStateConnected to AVChatStateEnded.
2010-01-29 14:05:45 -0600: Participant 0x63bb350: VC connection failed.
Chat ended with error -20
Laura Macburke2: State change from AVChatStateConnected to AVChatStateEnded.
Chat ended with error -20
Video Conference Error Report:
34.059291 @SIP/Transport.c:121 type=4 (00000000/0)
[NOTIFY sip:[email protected]:56754 SIP/2.0
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Max-Forwards: 70
To: "Laura Macburke2" <sip:[email protected]:56754>;tag=1831371757
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Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 3 NOTIFY
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User-Agent: Viceroy 1.2
Content-Length: 0
32.494025 @:0 type=4 (00000000/0)
[VCNO_REMOTEPACKETS]
[18]
30.067686 @SIP/Transport.c:121 type=4 (00000000/0)
[NOTIFY sip:[email protected]:56754 SIP/2.0
Via: SIP/2.0/UDP uen0.0;branch=z9hG4bK6ddeb2cf73f6ce49
Max-Forwards: 70
To: "Laura Macburke2" <sip:[email protected]:56754>;tag=1831371757
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Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 3 NOTIFY
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User-Agent: Viceroy 1.2
Content-Length: 0
26.059537 @SIP/Transport.c:121 type=4 (00000000/0)
[NOTIFY sip:[email protected]:56754 SIP/2.0
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Max-Forwards: 70
To: "Laura Macburke2" <sip:[email protected]:56754>;tag=1831371757
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CSeq: 3 NOTIFY
Contact: <sip:[email protected]>;isfocus
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Subscription-State: terminated;reason=noresource
User-Agent: Viceroy 1.2
Content-Length: 0
24.061281 @SIP/Transport.c:121 type=4 (00000000/0)
[NOTIFY sip:[email protected]:56754 SIP/2.0
Via: SIP/2.0/UDP uen0.0;branch=z9hG4bK6ddeb2cf73f6ce49
Max-Forwards: 70
To: "Laura Macburke2" <sip:[email protected]:56754>;tag=1831371757
From: "u0" <sip:[email protected]>;tag=385103684
Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 3 NOTIFY
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Subscription-State: terminated;reason=noresource
User-Agent: Viceroy 1.2
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23.162985 @SIP/Transport.c:121 type=4 (00000000/0)
[NOTIFY sip:[email protected]:56754 SIP/2.0
Via: SIP/2.0/UDP uen0.0;branch=z9hG4bK6ddeb2cf73f6ce49
Max-Forwards: 70
To: "Laura Macburke2" <sip:[email protected]:56754>;tag=1831371757
From: "u0" <sip:[email protected]>;tag=385103684
Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 3 NOTIFY
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Subscription-State: terminated;reason=noresource
User-Agent: Viceroy 1.2
Content-Length: 0
22.576970 @SIP/Transport.c:121 type=4 (00000000/0)
[NOTIFY sip:[email protected]:56754 SIP/2.0
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From: "u0" <sip:[email protected]>;tag=385103684
Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 3 NOTIFY
Contact: <sip:[email protected]>;isfocus
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Subscription-State: terminated;reason=noresource
User-Agent: Viceroy 1.2
Content-Length: 0
9.754589 @SIP/Transport.c:121 type=4 (00000000/0)
[NOTIFY sip:[email protected]:56754 SIP/2.0
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From: "u0" <sip:[email protected]>;tag=385103684
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Subscription-State: active;expires=3600
User-Agent: Viceroy 1.2
Content-Type: application/conference-info+xml
Content-Length: 205
[<c-i v="0" st="f" en="sip:[email protected]">
c<h>i</h><m t="a"/><m t="v"/>
c<h>o</h><m t="a"/><m t="v"/>
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9.753208 @SIP/Transport.c:121 type=4 (00000000/0)
[SIP/2.0 200 OK
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To: "u0" <sip:[email protected]>;tag=385103684
From: "Laura Macburke2" <sip:[email protected]:56754>;tag=1831371757
Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 1 SUBSCRIBE
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User-Agent: Viceroy 1.2
Content-Length: 0
9.664868 @SIP/Transport.c:121 type=4 (00000000/0)
[ACK sip:[email protected]:56754 SIP/2.0
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Max-Forwards: 70
To: "Laura Macburke2" <sip:[email protected]:56754>;tag=1831371757
From: "u0" <sip:[email protected]>;tag=385103684
Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 1 ACK
User-Agent: Viceroy 1.2
Content-Length: 0
9.099356 @SIP/Transport.c:121 type=4 (00000000/0)
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Max-Forwards: 70
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From: "u0" <sip:[email protected]>;tag=385103684
Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 1 INVITE
Contact: <sip:[email protected]>;isfocus
User-Agent: Viceroy 1.2
Content-Type: application/sdp
Content-Length: 536
[v=0
o=admin 0 0 IN IP4 uen0.0
s=u0
c=IN IP4 uen0.0
b=AS:2147483647
t=0 0
a=hwi:34:1:1200
a=bandwidthDetection:YES
a=iChatEncryption:NO
m=audio 16386 RTP/AVP 12 3 0
a=rtcp:16387
a=rtpmap:3 GSM/8000/1
a=rtpmap:0 PCMU/8000/1
a=rtpID:1892442351
m=video 16384 RTP/AVP 126 34
a=rtcp:16385
a=rtpmap:126 X-H264/90000
a=rtpmap:34 H263/90000
a=fmtp:34 imagesize 0 rules 15:352:288
a=framerate:20
a=RTCP:AUDIO 16387 VIDEO 16385
a=pogo
a=fmtp:126 imagesize 0 rules 20:160:120:160:120
a=rtpID:123999715
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34.059656 @SIP/Transport.c:1218 type=1 (00000000/0)
[SIP/2.0 200 OK
Via: SIP/2.0/UDP uen0.0;branch=z9hG4bK6ddeb2cf73f6ce49
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From: "u0" <sip:[email protected]>;tag=385103684
Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 3 NOTIFY
User-Agent: Viceroy 1.2
Content-Length: 0
33.137083 @:0 type=2 (00000000/2)
[VCCALL_ENDEDCOUNT]
[17]
30.069301 @SIP/Transport.c:1218 type=1 (00000000/0)
[SIP/2.0 200 OK
Via: SIP/2.0/UDP uen0.0;branch=z9hG4bK6ddeb2cf73f6ce49
To: "Laura Macburke2" <sip:[email protected]:56754>;tag=1831371757
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Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 3 NOTIFY
User-Agent: Viceroy 1.2
Content-Length: 0
26.059889 @SIP/Transport.c:1218 type=1 (00000000/0)
[SIP/2.0 200 OK
Via: SIP/2.0/UDP uen0.0;branch=z9hG4bK6ddeb2cf73f6ce49
To: "Laura Macburke2" <sip:[email protected]:56754>;tag=1831371757
From: "u0" <sip:[email protected]>;tag=385103684
Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 3 NOTIFY
User-Agent: Viceroy 1.2
Content-Length: 0
24.061489 @SIP/Transport.c:1218 type=1 (00000000/0)
[SIP/2.0 200 OK
Via: SIP/2.0/UDP uen0.0;branch=z9hG4bK6ddeb2cf73f6ce49
To: "Laura Macburke2" <sip:[email protected]:56754>;tag=1831371757
From: "u0" <sip:[email protected]>;tag=385103684
Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 3 NOTIFY
User-Agent: Viceroy 1.2
Content-Length: 0
23.164466 @SIP/Transport.c:1218 type=1 (00000000/0)
[SIP/2.0 200 OK
Via: SIP/2.0/UDP uen0.0;branch=z9hG4bK6ddeb2cf73f6ce49
To: "Laura Macburke2" <sip:[email protected]:56754>;tag=1831371757
From: "u0" <sip:[email protected]>;tag=385103684
Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 3 NOTIFY
User-Agent: Viceroy 1.2
Content-Length: 0
22.578864 @SIP/Transport.c:1218 type=1 (00000000/0)
[SIP/2.0 200 OK
Via: SIP/2.0/UDP uen0.0;branch=z9hG4bK6ddeb2cf73f6ce49
To: "Laura Macburke2" <sip:[email protected]:56754>;tag=1831371757
From: "u0" <sip:[email protected]>;tag=385103684
Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 3 NOTIFY
User-Agent: Viceroy 1.2
Content-Length: 0
11.029675 @:0 type=2 (00000000/2)
[VCVIDEO_STARTCOMPLETED]
[16]
11.029646 @:0 type=2 (00000000/2)
[VCVIDEO_INCOMINGCOMPLETION]
[11]
10.719451 @:0 type=2 (00000000/2)
[VCUSE_INTERNALMIC]
[29]
10.650426 @:0 type=2 (00000000/2)
[VCUSEDV]
[27]
9.763906 @SIP/Transport.c:1218 type=1 (00000000/0)
[SIP/2.0 200 OK
Via: SIP/2.0/UDP uen0.0;branch=z9hG4bK199efcba4d7aa545
To: "Laura Macburke2" <sip:[email protected]:56754>;tag=1831371757
From: "u0" <sip:[email protected]>;tag=385103684
Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 2 NOTIFY
User-Agent: Viceroy 1.2
Content-Length: 0
9.688386 @SIP/Transport.c:1218 type=1 (00000000/0)
[SUBSCRIBE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP m.0:56751;branch=z9hG4bK03684cb47799c88d
Max-Forwards: 70
To: "u0" <sip:[email protected]>;tag=385103684
From: "Laura Macburke2" <sip:[email protected]:56754>;tag=1831371757
Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 1 SUBSCRIBE
Contact: <sip:[email protected]:56751>
Event: conference
Expires: 3600
User-Agent: Viceroy 1.2
Content-Length: 0
9.613321 @SIP/Transport.c:1218 type=1 (00000000/0)
[SIP/2.0 200 OK
Via: SIP/2.0/UDP uen0.0;branch=z9hG4bK0589ec793bcf2336
To: "Laura Macburke2" <sip:[email protected]:56754>;tag=1831371757
From: "u0" <sip:[email protected]>;tag=385103684
Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 1 INVITE
Contact: <sip:[email protected]:56751>
User-Agent: Viceroy 1.2
Content-Type: application/sdp
Content-Length: 413
v=0
o=lauraburke 0 0 IN IP4 m.0
s=u0
c=IN IP4 m.0
b=AS:2147483647
t=0 0
a=hwi:784:1:1800
a=bandwidthDetection:YES
a=iChatEncryption:NO
m=audio 56759 RTP/AVP 12
a=rtcp:56760
a=rtpID:-337239833
m=video 56757 RTP/AVP 126
a=rtcp:56758
a=rtpmap:126 X-H264/90000
a=RTCP:AUDIO 56760 VIDEO 56758
a=fmtp:126 imagesize 0 rules 15:160:120:160:120
a=framerate:15
a=rtpID:-362537079
9.195704 @:0 type=2 (00000000/0)
[VCVIDEO_INCOMINGATTEMPT]
[3]
9.119168 @SIP/Transport.c:1218 type=1 (00000000/0)
[SIP/2.0 180 Ringing
Via: SIP/2.0/UDP uen0.0;branch=z9hG4bK0589ec793bcf2336
To: "Laura Macburke2" <sip:[email protected]:56754>;tag=1831371757
From: "u0" <sip:[email protected]>;tag=385103684
Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 1 INVITE
Contact: <sip:[email protected]:56751>
User-Agent: Viceroy 1.2
Content-Length: 0
9.118898 @SIP/Transport.c:1218 type=1 (00000000/0)
[SIP/2.0 100 Trying
Via: SIP/2.0/UDP uen0.0;branch=z9hG4bK0589ec793bcf2336
To: "Laura Macburke2" <sip:[email protected]:56754>
From: "u0" <sip:[email protected]>;tag=385103684
Call-ID: 7352bd3a-0d09-11df-b5ee-a3591bb813c4@66-227-184-124
CSeq: 1 INVITE
User-Agent: Viceroy 1.2
Content-Length: 0
0.266057 @:0 type=2 (00000000/2)
[VCUSEDV]
[27]
0.000000 @:0 type=2 (00000000/2)
[VCUSEDV]
[27]

Power shuts down after 1-2 seconds?

I've been very happy with this computer for about a year:
Mobo = K9N SLI Platinum (MS 7250) 570 SLI (this one was rma'ed last year due to the cd burn issue)
RAM = 4X 1G Corsair Dominator
CPU = AM2 dualcore 5200
Video=MIS NX8800GTS 320
PWR=700W OCZ GameXStream PS
I turned it on the other day and system power cuts out after about 1 or 2 seconds.
So far I have not been able to boot the system at all.
I have observed the D-Bracket with 4 red lights, but I don't know if it really has time to run it's test cycle before the power cuts out...
I'm not really sure how to start trouble shooting this issue.
PS? CPU? Mobo?
Any sugestions are welcome. Can the mobo do this by itself? I was reading the manual but did not see it that use case described anywhere.
Thanks
Chris.

Can't really defend the motherboard, but Belkin card and DVD-burner can have problems all of their own. And if we can help you with one of those things the failure rate is down dramatically.
Belkin card bottom PCI-slot. On-board disabled. Sometimes disabling a service, which I can't remember right now - zeroconfig...? - can help. How do you know it does not work?
Set UDMA2 for the DVD-burner. But you should also say what it is.
Add: Mysterious problems is often Windows related. How about taking unnecessary things out, use a clean hard disk and do a fresh installation?

VTY shell freezes after a few seconds?

Hi,
I'm experiencing an odd issue; I don't start the X server at boot however, after a few seconds the VTY will just freeze totally?
The system hasn't hung as I can still access over the network via SSH, and the X server when started (via SSH) works fine.
Basically after a few seconds there is no keyboard input, though at first it does work. So after logging into user account I can use it properly before it will just freeze and I will forced to login through the network using SSH.
Last night after a kernel update it seems the issue got remedied but after a reboot seems to have come back.
Kernel version is: 3.17.3-1 64 bit
The actual system is a Zotac D2550 ATOM mini-itx board
keyboard is standard USB PC keyboard
On boot there was a kernel message about something needing to be run with update, but it went too fast for me to catch and couldn't find it in my logs again. I wonder if that's the issue?
Could anyone suggest something I could try in order to be able to debug this? I can provide more information if needed, though at present I'm not sure what. I also attempted to search for the issue but most results came back with kernel freeze which isn't what I'm experiencing as it seems to be either related to usb devices or the VTY shell specifically.
Thanks.
[EDIT]
Actually I have just tested and keyboard is not functioning even when running the X server - though it does function at first like stated above.
Quick extra edit, did some more digging:
https://bbs.archlinux.org/viewtopic.php?id=185273
seems related.
GPU is Nvidia! forgot to mention that; lspci mentions it as GT610 - currently using "nvidia" package perhaps I should be using one of the other ones?
Last edited by JohnnySSH (2014-11-17 12:50:31)

The shell is Bash, however I am not sure if it's the shell or VTY directly?? Basically it seems that the input doesn't work any more after a few seconds.... perhaps something to do with USB layer in kernel?
Shell otherwise from SSH is fine (Bash again). Also cursor is flashing but just no input after a while.
Unfortunately I don't see anything
Output of dmesg just shows:
[ 5.741904] hidraw: raw HID events driver (C) Jiri Kosina
[ 6.001452] usbcore: registered new interface driver usbhid
[ 6.001454] usbhid: USB HID core driver
[ 6.134172] hid-generic 0003:05A4:9881.0001: input,hidraw0: USB HID v1.10 Keyboard [HID 05a4:9881] on usb-0000:00:1d.1-1/input0
[ 6.159223] hid-generic 0003:05A4:9881.0002: input,hidraw1: USB HID v1.10 Mouse [HID 05a4:9881] on usb-0000:00:1d.1-1/input1
Nothing related in journalctl.

Logic pro crashes / freezes after running about a hour after updating

Hope anyone can help me.
I use G5 powermac.
Had 10.3.x running with Pro6 with no problems (because of that I'm a big mac fan
I updated to Pro7.2.x and also to OSX 10.4.8 when the problem started
It's a strange problem, it seems something happens in my computer after a period of time.
Logic is always crashing / freezes after working with it for about 1 hour (not sure exact time). When I just leave my mac on for the same period of time not running logic and start up Logic later it also freezes imidiately. But only logicpro seems to have this problem. All other programs working well.
I need to restart my computer to start working again and then again after a period logic crashes again. I also installed logic express but express works well.
I already reinstalled everything a few times and also working with just the basic (no plugs, interal audio, no hardware, no extra memory ect.) didn't help. I did changed discdrives, internal memory ect.
Hope anyone has an idea what it can be
Thanks for helping
Powermac G5 SP 1.8 Mac OS X (10.4.9) 2GB int. mem

hi,
look here:
http://docs.info.apple.com/article.html?artnum=302212
hier you will find the right downloads for the firmware update for the late 2004 g5 1.8. choose the right updater for your system.
it should also appear if you use the software update.
after that it should work like before.
hope that helps
all the best
andreas

IChat 4.0 on leopard freezes after about 5 seconds

I have a 24'' iMac and my wife has a 13'' macbook. We both have the most updated version of leopard on our computers. The problem is that whenever we try to do a video chat with each other, my video freezes up after about 5 seconds, and hers keeps going. We both have set our bandwidth limit to none in ichat and the streaming speed in System prefs> Quicktime to 1.5 Mbps. Anyone know what else could cause this? Thanks

A "Crash" of an application is a Specific thing where you get an Error message saying it "Unexpectantly Quit" and a Log in the relevant Crash Error logs in Console. The marker underneath the app in the DOCK would also disappear.
An App that Freezes or part of the display of it Freezes would not normally be considered as to have Crashed.
Having said that I have had a repeatable issue where a Tester with me could definitely Crash my iChat. Sure enough each time he tried to call my iChat Unexpectantly Quit.
It turned out it was a faulty router at his end.
The Video freezing is normally a Bandwidth Issue (the 363k is fast enough tht this should not happen based on those speeds or the ones you tested)
It can be down to how busy the Processor is with on-line Widgets like Weather and Clock and others. or Background apps and Utilities
The way to see those is to open the Activity Monitor.
7:35 PM Thursday; February 14, 2008

Thread won't run a second time

Using JDK 1.4.1 on a Windows 2000 box
After a thread is created, started and completes, it is not possible to start the same thread object a second time.
I'm not sure what's going on here. It seems that a thread pool implementation could never work if what I've found is true. This seems unlikely, but my test program is very simple. If you run it you will notice that run() is called after the first start(), but not after the second. The isAlive() state returns false as expected after the join(), so it appears the thread has finished executing. I've tried sleeping in various ways waiting for the thread to start the second time, but it never starts.
public class ThreadTest
    private static class MyThread extends Thread
        final public void run()
            System.out.println( "run() called" );
    private static void testThreadRestart()
        for ( int i = 0; i < 10; i++ )
            System.out.println( i );
            try
                MyThread thread = new MyThread();
                System.out.println( "start() called 1" );
                thread.start();
                thread.join();
                System.out.println( "thread.isAlive() = " + thread.isAlive());
                //Thread.sleep( 60000 );
                System.out.println( "start() called 2" );
                thread.start();
                thread.join();
                System.out.println( "thread.isAlive() = " + thread.isAlive());
                // Try a sleep loop to wait for the thread to start.
                for ( int j = 0; j < 1000; j++ )
                    Thread.sleep( 1 );
                //Thread.sleep( 60000 );
            catch ( InterruptedException e )
                // do nothing
    public static void main( String[] args )
        testThreadRestart();
}

I found the following information in "Concurrent Programming in Java" 2nd Edition, by Doug Lea.
"Threads are not restartable, even after they terminate. Invoking start more than once results in an InvalidThreadStateException."
The first part seems to be true, but the second part is only true if the thread is still alive. Once the thread completes, calling start() a second time results in no exception and no action.
I did not find any such information in Sun's documentation.
Apparently a thread pool implementation relies on threads that never "finish". That is the thread object never exits the run() method, but employs a mechanism by which it accepts new tasks, executes them. When the task completes, the thread's run() method loops and waits for a new task. run() is never exited.

C++/CUDA DLL fails to give correct results when running a second time

Hi all.
I just finished writing a C++/CUDA DLL that runs in labview.
It passes a 3d array, crunches the data, then spits out some results as a 2d array.
When I open labview, and run it, I get the predicted results. However if I run the labview code again, it gives me garbage data.
I have to not only close the open VI, but all of labview itself, reopen it, and then it will work again for one run.
I read a thread on somthing similar to this happening with C++ code due to the way labview handled threads, however this was over 10 years ago, and it seems that since LV 2008 this has been fixed. I am running LV 2011.
In my code, I checked that all dynamic memory allocated gets deleted, both on the GPU and CPU so other than that, I'm not sure what the problem could be. What changes when I call the DLL a second time?
Please ask me to clarify anything that you might need to know about the program, and its implimentation.
I have written other labview DLLs in just C++ that have not had this problem, so I wonder if it is a CUDA specific thing, or maybe somthing else I am overlooking.

It seems to be that something not properly closed. What you can try is - unload DLL.
CUDA Compute Context should be theoretically not necessary if your CUDA functions executed "all in one call" (and properly closed at all). The reason for NI Compute is following: it is not guaranteed that thread safe DLL calls will be called in the same thread. So, for example if you have three separate DLL calls in LabVIEW, for example - transfer data to GPU memory, compute, transfer back to the host - they should be done in the same thread (in CUDA terms all functions should be executed within same context). You can call these functions in UI thread - it will work, but the UI thread will be blocked. Or you can mark calls as thread safe, and using NI Compute - then all three calls will be done within same thread and this thread is separated from UI thread.
Andrey.

Power supply freezes after running vi second time

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