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Date:      Thu, 18 Mar 2010 10:01:51 -0700
From:      Xin LI <delphij@delphij.net>
To:        Kevin Oberman <oberman@es.net>
Cc:        stable@FreeBSD.ORG, delphij@FreeBSD.ORG, jkim@FreeBSD.org
Subject:   Re: DPMS broken on ThinkPad T43 since update for amd64 support
Message-ID:  <4BA25C7F.6060009@delphij.net>
In-Reply-To: <20100318153342.4450C1CC26@ptavv.es.net>
References:  <20100318153342.4450C1CC26@ptavv.es.net>

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Hi,

On 2010/03/18 08:33, 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?
> 
> The system is a uniprocessor Pentium-M:
> CPU: Intel(R) Pentium(R) M processor 2.00GHz (1995.01-MHz 686-class CPU)
>   Origin = "GenuineIntel"  Id = 0x6d8  Stepping = 8
>   Features=0xafe9fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,$
>   Features2=0x180<EST,TM2>
>   AMD Features=0x100000<NX>
> 
> My display is:
> vgapci0@pci0:1:0:0:     class=0x030000 card=0x056e1014 chip=0x54601002 rev=0x00 hdr=0x00
>     vendor     = 'ATI Technologies Inc. / Advanced Micro Devices, Inc.'
>     device     = 'Radeon X300 Mobility (M22) (RV370)'
>     class      = display
>     subclass   = VGA

Looks like that the CPU runs on i386 mode (doesn't support amd64?) and
when the screen was blank (with back light) the kernel is still alive
(as you can switch to X?

Cheers,
- -- 
Xin LI <delphij@delphij.net>	http://www.delphij.net/
FreeBSD - The Power to Serve!	       Live free or die
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