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#1
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What runs that turns display on?
What, in a bare XP Pro, runs that persuades XP to turn the display on?
There's nothing awfully suspicious in task manager, but it shows 70% of a dual core CPU active, 50% of which is my own background job that runs for days; so about 20% unknown. explorer.exe sometimes turns up in the #3 cpu slot after my job first and Idle second. Automatic indexing is turned off, no network activity. It just started. If I turn the monitor off at a 1 minute limit, it turns off and then turns back on again in about a minute. "Normally" it runs dark and at 50% cpu exactly. A couple machines have gone through this episode recently, making me suspect that it's something XP does occasionally, say monthly. Even if it does something in the background, why would it turn on the display? -- On the internet, nobody knows you're a jerk. |
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#2
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What runs that turns display on?
"Ron Hardin" wrote in message ...
What, in a bare XP Pro, runs that persuades XP to turn the display on? There's nothing awfully suspicious in task manager, but it shows 70% of a dual core CPU active, 50% of which is my own background job that runs for days; so about 20% unknown. explorer.exe sometimes turns up in the #3 cpu slot after my job first and Idle second. Automatic indexing is turned off, no network activity. It just started. If I turn the monitor off at a 1 minute limit, it turns off and then turns back on again in about a minute. "Normally" it runs dark and at 50% cpu exactly. A couple machines have gone through this episode recently, making me suspect that it's something XP does occasionally, say monthly. Even if it does something in the background, why would it turn on the display? antivirus system's, looking to see if the display drives may have a virus.. |
#3
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What runs that turns display on?
John Smith wrote:
"Ron Hardin" wrote in message .. What, in a bare XP Pro, runs that persuades XP to turn the display on? There's nothing awfully suspicious in task manager, but it shows 70% of a dual core CPU active, 50% of which is my own background job that runs for days; so about 20% unknown. explorer.exe sometimes turns up in the #3 cpu slot after my job first and Idle second. Automatic indexing is turned off, no network activity. It just started. If I turn the monitor off at a 1 minute limit, it turns off and then turns back on again in about a minute. "Normally" it runs dark and at 50% cpu exactly. A couple machines have gone through this episode recently, making me suspect that it's something XP does occasionally, say monthly. Even if it does something in the background, why would it turn on the display? antivirus system's, looking to see if the display drives may have a virus.. There's no antivirus on the machine - just zonealarm (machine is used as a cpu server, not a browser) -- On the internet, nobody knows you're a jerk. |
#4
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What runs that turns display on?
Ron Hardin wrote:
There's no antivirus on the machine - just zonealarm (machine is used as a cpu server, not a browser) Network device has WakeOnLan enabled? |
#5
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What runs that turns display on?
JJ wrote:
Ron Hardin wrote: There's no antivirus on the machine - just zonealarm (machine is used as a cpu server, not a browser) Network device has WakeOnLan enabled? No change if I disable it, or even disable all the network connections. If I reboot and restart the job, it's good (dark display) for about three minutes and then the display turns on again. If I manually turn the display off #include windows.h main() { sleep(1); SendMessage(HWND_BROADCAST, WM_SYSCOMMAND, SC_MONITORPOWER, (LPARAM) 2); exit(0); } it stays off for only 1 to 3 seconds, so something is aggressively turning it back on. The damn thing needs a physical switch. Well I can get it to stay off if I almost close the lid (having set the action for lid closing to nothing instead of standby) -- On the internet, nobody knows you're a jerk. |
#6
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What runs that turns display on?
Ron Hardin wrote:
There's no antivirus on the machine - just zonealarm (machine is used as a cpu server, not a browser) Try disabling all third party programs including your background jobs then check it again. Don't forget to disable all third-party device driver tools such as NVIDIA video, ATI/AMD video, and Realtek audio. As well as third party services. Use Process Explorer and AutoRuns from Microsoft's website to find any third party programs. |
#7
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What runs that turns display on?
JJ wrote:
Ron Hardin wrote: There's no antivirus on the machine - just zonealarm (machine is used as a cpu server, not a browser) Try disabling all third party programs including your background jobs then check it again. Don't forget to disable all third-party device driver tools such as NVIDIA video, ATI/AMD video, and Realtek audio. As well as third party services. Use Process Explorer and AutoRuns from Microsoft's website to find any third party programs. It stays dark if I stop the background job (even just by kill -STOP, so it's still taking memory but just suspended) But that's not the common treatment by XP, which seems (when working) to check keyboard and mouse activity rather than processor load. I suspect some software is substituting processor load for human activity, or some software mimics human activity and XP takes it as a cue to turn on the monitor. I understand flash has some such thing to keep the screen on watching a video, but there's no flash on this machine. One clue is that what turns on is the screen saver screen, so some part of XP at least thinks it's idle still. -- On the internet, nobody knows you're a jerk. |
#8
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What runs that turns display on?
"Ron Hardin" wrote in message ...
John Smith wrote: "Ron Hardin" wrote in message .. What, in a bare XP Pro, runs that persuades XP to turn the display on? There's nothing awfully suspicious in task manager, but it shows 70% of a dual core CPU active, 50% of which is my own background job that runs for days; so about 20% unknown. explorer.exe sometimes turns up in the #3 cpu slot after my job first and Idle second. Automatic indexing is turned off, no network activity. It just started. If I turn the monitor off at a 1 minute limit, it turns off and then turns back on again in about a minute. "Normally" it runs dark and at 50% cpu exactly. A couple machines have gone through this episode recently, making me suspect that it's something XP does occasionally, say monthly. Even if it does something in the background, why would it turn on the display? antivirus system's, looking to see if the display drives may have a virus.. There's no antivirus on the machine - just zonealarm (machine is used as a cpu server, not a browser) If you have a Mouse, just a little movement of desk, by working up to the computer, can turn on the display.. I have seen a computer fan cause desk movement, that the Mouse turn on the display.. -- Always turning on the Automatic Updates feature in Windows XP. Faulty uninstall files. Now you need to know how to use MS Fix-It http://fixitcenter.support.microsoft.com/Portal |
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