Picking up this old bug report... On Sat, 13 Jan 2018 09:30:24 +0100 Marc-Robin Wendt <we...@math.tu-berlin.de> wrote: > > On Fri, 2018-01-12 at 01:12 +0000, Ben Hutchings wrote: > > On Thu, 2018-01-11 at 12:25 +0100, Marc-Robin Wendt wrote: > > > Hello Ben and Michael, > > > > > > thanks for taking time. Of course its DPMS. Sorry for the typo. > > > > > > Reproducing the bug turns out, it first appears in linux-image- > > > 4.9.0-4- > > > amd64 and now linux-image-4.9.0-5-amd64. > > > > > > When I boot the system from grub with old kernel linux-image-4.9.0- > > > 3- > > > amd64 or linux-image-4.9.0-2-amd64, behavior is as expected ok, > > > means > > > switching off the monitor doesnt trigger suspend of the system. > > > > So are *you* switching off the monitor? You mentioned DPMS, which is > > the way for the display adapter to control the monitor - it doesn't > > involve any signalling in the other direction. > > > > And is the monitor attached to a VGA or digital port? If it's a > > digital port, turning off power to the monitor will look exactly the > > same as unplugging it... > > > > I examined the problem more closely. Lid is closed, because the laptop > is on the dock. Connection via display port. When I connect via HDMI > there are no problems with turning on or off the monitor. > > It doesn't matter how the monitor is switched off, manual or > screensaver or even by command from command line. > The suspend is actually triggered when you switch the monitor on(!) > again. I didn't noticed it so far, because it happens instantly, when > you touch anything keyboard or mouse to wake up the monitor from > screensaver. > > So, monitor is switched off, system runs, I even could ping it. Wake up > the monitor will send the system into suspend. Even more strange > behavior. > > Graphic card, see my first mail. Its a Lenovo T430s, so probably > NVIDIA > > > NVS 5200M inside. Monitor is LG 34UM88C-P. > >
Are you using the proprietary nvidia driver or noveau? -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth?
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