DPMS broken on ThinkPad T43 since update for amd64 support
smithi at nimnet.asn.au
Fri Mar 19 03:42:51 UTC 2010
On Thu, 18 Mar 2010, Kevin Oberman wrote:
> Since the update of DPMS to support amd64 on March 2, it has broken
> rather badly on my ThinkPad T43 laptop. The problem showed up on
> 8-stable built on March 3 and is still present after an update to stable
> of March 17.
> When in vty text mode, after the idle normal delay, the display blanks,
> but the backlight remains on, so the P in DPMS seems to be less than
> effective. At that point, the non-graphics display is dead. It never
> comes back when characters are entered. I can't get the display to come
> back without a reboot.
> I can, however, start X (and Gnome) and everything is fine. But
> switching back to any vty results in a blank screen.
> Any idea what happened and if there is a fix or workaround? Any data I
> can collect?
Have you tried kldloading vesa? Might be a workaround until you find a
proper fix? Had a similar issue with my T23 at one stage on 7.0, after
a suspend/resume cycle, which hw.syscons.sc_no_suspend_vtswitch=1 also
helped .. no idea how the T43 might respond to the latter.
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