Hi, Thank you for the explanation and instructions.
The following is the output when upowerd is executed from the command line (prior to the blinking occurs): # killall upowerd && /usr/lib/upower/upowerd (upowerd:25054): UPower-DEBUG: Starting upowerd version 0.9.8 (upowerd:25054): UPower-DEBUG: cannot find a keyboard backlight (upowerd:25054): UPower-Linux-DEBUG: excuting command: /usr/bin/pm-is-supported --suspend (upowerd:25054): UPower-Linux-DEBUG: excuting command: /usr/bin/pm-is-supported --hibernate (upowerd:25054): UPower-Linux-WARNING **: failed to open /etc/crypttab: Failed to open file '/etc/crypttab': No such file or directory (upowerd:25054): UPower-DEBUG: daemon now coldplug (upowerd:25054): UPower-Linux-DEBUG: registering subsystem : power_supply (upowerd:25054): UPower-Linux-DEBUG: registering subsystem : usb (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-1 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-1 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-1 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-2 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-2 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-2 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.1/usb4 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.1/usb4 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.1/usb4 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.1/usb4/4-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.1/usb4/4-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.1/usb4/4-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.7/usb1 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.7/usb1 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.7/usb1 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.7/usb1/1-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.7/usb1/1-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1a.7/usb1/1-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.0/usb5 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.0/usb5 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.0/usb5 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.0/usb5/5-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.0/usb5/5-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.0/usb5/5-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.1/usb6 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.1/usb6 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.1/usb6 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.1/usb6/6-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.1/usb6/6-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.1/usb6/6-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.2/usb7 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.2/usb7 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.2/usb7 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.2/usb7/7-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.2/usb7/7-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.2/usb7/7-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.7/usb2 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.7/usb2 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.7/usb2 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-0:1.0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-0:1.0 (upowerd:25054): UPower-Linux-DEBUG: registering subsystem : tty (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pci0000:00/0000:00:03.3/tty/ttyS1 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/platform/serial8250/tty/ttyS2 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/platform/serial8250/tty/ttyS3 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/pnp0/00:08/tty/ttyS0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/console (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/ptmx (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty0 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty1 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty10 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty11 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty12 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty13 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty14 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty15 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty16 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty17 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty18 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty19 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty2 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty20 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty21 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty22 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty23 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty24 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty25 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty26 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty27 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty28 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty29 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty3 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty30 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty31 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty32 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty33 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty34 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty35 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty36 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty37 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty38 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty39 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty4 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty40 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty41 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty42 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty43 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty44 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty45 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty46 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty47 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty48 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty49 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty5 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty50 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty51 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty52 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty53 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty54 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty55 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty56 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty57 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty58 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty59 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty6 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty60 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty61 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty62 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty63 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty7 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty8 (upowerd:25054): UPower-DEBUG: failed to coldplug /sys/devices/virtual/tty/tty9 (upowerd:25054): UPower-Linux-DEBUG: registering subsystem : input (upowerd:25054): UPower-Linux-DEBUG: not a switch [/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input4/../capabilities/sw] (upowerd:25054): UPower-Linux-DEBUG: not one bitmask entry for /sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input4 (upowerd:25054): UPower-Linux-DEBUG: not one bitmask entry for /sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input4/event4 (upowerd:25054): UPower-Linux-DEBUG: not a switch [/sys/devices/LNXSYSTM:00/device:00/PNP0C0C:00/input/input3/../capabilities/sw] (upowerd:25054): UPower-Linux-DEBUG: not one bitmask entry for /sys/devices/LNXSYSTM:00/device:00/PNP0C0C:00/input/input3 (upowerd:25054): UPower-Linux-DEBUG: not one bitmask entry for /sys/devices/LNXSYSTM:00/device:00/PNP0C0C:00/input/input3/event3 (upowerd:25054): UPower-Linux-DEBUG: not a switch [/sys/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1:1.0/input/input8/../capabilities/sw] (upowerd:25054): UPower-Linux-DEBUG: not one bitmask entry for /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1:1.0/input/input8 (upowerd:25054): UPower-Linux-DEBUG: not one bitmask entry for /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1:1.0/input/input8/event0 (upowerd:25054): UPower-Linux-DEBUG: not one bitmask entry for /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1:1.0/input/input8/mouse0 (upowerd:25054): UPower-Linux-DEBUG: not a switch [/sys/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.0/input/input1/../capabilities/sw] (upowerd:25054): UPower-Linux-DEBUG: not one bitmask entry for /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.0/input/input1 (upowerd:25054): UPower-Linux-DEBUG: not one bitmask entry for /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.0/input/input1/event1 (upowerd:25054): UPower-Linux-DEBUG: not a switch [/sys/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1/input/input2/../capabilities/sw] (upowerd:25054): UPower-Linux-DEBUG: not one bitmask entry for /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1/input/input2 (upowerd:25054): UPower-Linux-DEBUG: not one bitmask entry for /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1/input/input2/event2 (upowerd:25054): UPower-Linux-DEBUG: not a switch [/sys/devices/pci0000:00/0000:00:1b.0/input/input6/../capabilities/sw] (upowerd:25054): UPower-Linux-DEBUG: not one bitmask entry for /sys/devices/pci0000:00/0000:00:1b.0/input/input6 (upowerd:25054): UPower-Linux-DEBUG: not one bitmask entry for /sys/devices/pci0000:00/0000:00:1b.0/input/input6/event6 (upowerd:25054): UPower-Linux-DEBUG: not a switch [/sys/devices/platform/pcspkr/input/input5/../capabilities/sw] (upowerd:25054): UPower-Linux-DEBUG: not one bitmask entry for /sys/devices/platform/pcspkr/input/input5 (upowerd:25054): UPower-Linux-DEBUG: not one bitmask entry for /sys/devices/platform/pcspkr/input/input5/event5 (upowerd:25054): UPower-Linux-DEBUG: not a switch [/sys/devices/virtual/input/mice/../capabilities/sw] (upowerd:25054): UPower-Linux-DEBUG: not a switch [/sys/devices/virtual/input/mice/capabilities/sw] (upowerd:25054): UPower-Linux-DEBUG: graphics device /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0/card0-DIN-1 is off (upowerd:25054): UPower-Linux-DEBUG: graphics device /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0/card0-DVI-I-1 is on (upowerd:25054): UPower-Linux-DEBUG: graphics device /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0/card0-DVI-I-2 is off (upowerd:25054): UPower-DEBUG: is_docked = no (upowerd:25054): UPower-DEBUG: on_battery = no (upowerd:25054): UPower-DEBUG: on_low_battery = yes (upowerd:25054): UPower-DEBUG: daemon now not coldplug (upowerd:25054): UPower-DEBUG: excuting command: /usr/sbin/pm-powersave false When the screen blinking occurs, the following output appears: (upowerd:25054): UPower-Linux-DEBUG: Doing the dock refresh (upowerd:25054): UPower-Linux-DEBUG: graphics device /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0/card0-DIN-1 is off (upowerd:25054): UPower-Linux-DEBUG: graphics device /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0/card0-DVI-I-1 is on (upowerd:25054): UPower-Linux-DEBUG: graphics device /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0/card0-DVI-I-2 is off (upowerd:25054): UPower-DEBUG: is_docked = no ^C(upowerd:25054): UPower-DEBUG: Handling SIGINT Hope the feedback is useful to figure out the source of the problem :-) Best, HZ On Tue, Mar 1, 2011 at 2:04 PM, Michael Biebl <bi...@debian.org> wrote: > Am 01.03.2011 19:56, schrieb L. Biardeau: >> Package: upower >> Severity: normal >> >> Hello, >> I also reproduced the problem with a nvidia video chipset (GeForce 6150), >> and a >> single monitor (resolution: 1360x768 60Hz): the screen blinks (seems to >> switch >> to power save mode during 1 or 2 seconds every 30 seconds). >> Same scenario: the problem appears when upgrading upower from 0.9.5-5 to >> 0.9.8-2, and disappears when downgrading the package back to 0.9.5-5. >> > > upower does not control the display power management, that should be done via > X > and DPMS. > > That said, could you send me the output of > upower --dump and running (as root) > killall upowerd && /usr/lib/upower/upowerd > > Does upowerd output anything relevant when the screen blinking occurs? > > > -- > Why is it that all of the instruments seeking intelligent life in the > universe are pointed away from Earth? > > -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? 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