So I have been playing with PC power management for a while now, and have noticed a high recurrence of a "black screen" issue with LANDesk Remote Control. If I try to remote control a PC that was in standby mode, the session connects successfully, but the default blue-black gradient background in ISSCNTR changes to all black instead of getting the remote screen. However, the mouse and keyboard do control the machine even though video is all black. Changing the "Use mirror driver" setting has no effect, changing color depth has no effect, closing ISSCNTR and reconnecting has no effect. Restarting the ISSUSER service on the client has no effect. I have determined that if the PC wakes up but the monitor is still in standby, no video will be displayed through LD Remote Control. If I have someone move the mouse to wake up the display, then I DO get video in ISSCNTR.
Any ideas? Is this expected behavior? Thanks!
Moving this thread to the Power Management section.
Are you using LANDesk Powermanagement to put these machines to sleep? Does this occur on every kind of machine or just on laptops or machines with a certain type of video card, etc? Have you tried updating to the latest video driver on one of the machines to see if its just a direct 3d thing?
I have observed this on laptops and desktops of various models. It doesn't seem to matter what video chipset or driver is involved. It appears that as long as the video card/monitor are in standby mode while the rest of computer is running, I can't get any video through ISSCNTR until the local monitor is displaying an image.
I am using Verismic PowerManager, but the problem has been observed on computers without Verismic (not installed on any laptop) that wake up but leave the video in suspend.
For what it's worth, I am experiencing the same problem; not using Verismic PowerManager, just LANDesk v 9.0 and the Power Management module.
For what it's worth, I also am experiencing this and I am not using Verismic or LANDesk PowerManagement. We are on version 9 SP2.
I still observe this on LD9 SP2 with the latest published MCP for Remote Control patch installed:
1 - Right-click a computer in the Console
2 - Wake it up
3 - The device wakes up, leaving the monitor asleep
4 - No video in ISSCNTR
5 - Move the mouse on the computer to wake up the monitor
6 - Video appears in ISSCNTR