[Bug 60714] resume from suspend-to-ram does not work any more

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=60714

--- Comment #14 from MDBürkle <dominik.buerkle at web.de> ---
(In reply to Jesse Barnes from comment #13)
> Hm so this is a hybrid gfx machine?

Yes, this is a core-i5-2430M-graphics-and-amd-6470(M)-gpu machine.

>From lspci -vmmnn:

Slot:   00:02.0
Class:  VGA compatible controller [0300]
Vendor: Intel Corporation [8086]
Device: 2nd Generation Core Processor Family Integrated Graphics Controller
[0116]
SVendor:        Hewlett-Packard Company [103c]
SDevice:        Device [1670]
Rev:    09

Slot:   01:00.0
Class:  VGA compatible controller [0300]
Vendor: Advanced Micro Devices [AMD] nee ATI [1002]
Device: Seymour [Radeon HD 6400M/7400M Series] [6760]
SVendor:        Hewlett-Packard Company [103c]
SDevice:        Device [1670]

AMD renamed the chips from 6470 to 7470 or the like, lately.


> Maybe you need to have fglrx loaded,
> but it can't support VT-switchless resume?

I do have fglrx loaded as my X configuration is based on it. However, I had a
working setup without fglrx, before...

I was not aware that suspending/resuming in pre-3.10.x kernels is using VT
(usually vt7/vt8) switching. That flickering of the screen (e.g. in 3.9.11) is
the VT switching - to which vt (the controlling tty? nothing written there,
only a black screen) is it switching to or do I guess right that it's just the
mode of vt7/vt8 that's changed from graphics to text?

In one of the many hangs I experienced in the last days, I moved the mouse
pointer before the system was frozen (ie. suspend by close-laptop, wait for
power led to blink slowly, resume by open-laptop, see mouse pointer move some
3cm, see mouse pointer (and system) frozen a fraction of a second later).
Is that of importance?

TIA

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