Re: suspend/restore almost works on Sony PCG-GRX570, acpi_video not good

From: George Hartzell (hartzell_at_kestrel.alerce.com)
Date: 06/28/05

  • Next message: John Baldwin: "Re: suspend/restore almost works on Sony PCG-GRX570, acpi_video not good" 
    Date: Tue, 28 Jun 2005 11:49:20 -0700
To: John Baldwin <jhb@FreeBSD.org>

    John Baldwin writes:
    > On Monday 27 June 2005 06:57 pm, George Hartzell wrote:
    > > John Baldwin writes:
    > > > On Sunday 19 June 2005 06:31 pm, George Hartzell wrote:
    > > > > Hi,
    > > > >
    > > > > I'm working on a Sony PCG-GRX570.
    > > > > [...]
    > > >
    > > > The problem is that your LCD isn't turned back on via DPMS, but there's
    > > > not a good way to fix that always. Especially if your BIOS doesn't
    > > > support DPMS.
    > >
    > > Can you say a bit more about this? [...]
    >
    > The ACPI spec says that the OS is supposed to power down the attached
    > monitor using DPMS before it shuts down the video controller and that
    > it should turn the monitor back on using DPMS after it has resumed the
    > video controller. FreeBSD currently just does the video controller
    > parts (sort of) and doesn't do the DPMS stuff at all except in the
    > patch to hack acpi_video, and that only works if your VGA BIOS
    > supports DPMS and it can only work for the primary monitor even then.

    So, do you think that I'm hanging when I try to resume because the
    display wasn't shut off using DPMS before FreeBSD shutdown (or
    sort-of-shutdown) the video controller), or do you think that the lack
    of DPMS shutdown confounds the situation?

    g.
    _______________________________________________
    freebsd-current@freebsd.org mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-current
    To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"

  • Next message: John Baldwin: "Re: suspend/restore almost works on Sony PCG-GRX570, acpi_video not good"

    Relevant Pages

    • Re: suspend/restore almost works on Sony PCG-GRX570, acpi_video not good
      ... > The ACPI spec says that the OS is supposed to power down the attached ... > monitor using DPMS before it shuts down the video controller and that ... > it should turn the monitor back on using DPMS after it has resumed the ...
      (freebsd-current)
    • Re: Strange video troubles (DPMS & nv driver)
      ... be traceable to my Samsung SyncMaster 940BW 19" LCD monitor. ... when I noticed I was not getting consistent reactions to my DPMS ... usually run, with its power management settings, but it didn't seem to ... video driver related and tried the nv driver. ...
      (Debian-User)
    • Re: DPMS working again after X updates on Lenny
      ... This morning after installing all the updates, I rebooted the machine, ... that the monitor is again going into standby after some 30mins or so. ... The "options DPMS" line is still commented out, ... the monitor would not go into standby mode. ...
      (Debian-User)
    • Re: DPMS working again after X updates on Lenny
      ... This morning after installing all the updates, I rebooted the machine, ... the monitor is again going into standby after some 30mins or so. ... where do I go now to stop DPMS being used. ... monitor would not go into standby mode. ...
      (Debian-User)
    • Re: suspend/restore almost works on Sony PCG-GRX570, acpi_video not good
      ... >> it should turn the monitor back on using DPMS after it has resumed the ... >> video controller. ... > of DPMS shutdown confounds the situation? ...
      (freebsd-current)