Re: [ACPI] [PATCH] s3_bios and lcall $0xc000,$3

[Bjorn W. <bjo...@ax...>]

On 18 Feb 2003, Charl P. Botha wrote:
> If the X server is not using DRI, the BIOS initialisation is mostly
> sufficient, as X resets the correct video mode when one VT switches

DOes the X server react to the pm events then and does this resetting when 
resuming, without having to switch manually to the console before and back 
after ?

> back.  However, if one is using DRI, the BIOS initialisation is OFTEN
> not even close, so you have to do something like I did to the Radeon
> drivers: http://cpbotha.net/dri_resume.html

Just if someone is interested...

I found this somewhat interesting PM code in the GPL part of the nvidia 
binary driver. I wonder what the comment is talking about wrgds to APM vs. 
ACPI and if it might work now. Haven't tried... (the rm_power_management 
functions are in the binary-only part).

    switch (rqst)
    {
#if 0
        /* XXX PM HACK!! for now, let's try this */

        // our video bios doesn't support APM, only ACPI
        // for now, return an error to try and keep the machine
        // from entering suspend/resume, so as to not lose any
        // user's data.
        case PM_RESUME:
            nv_printf(NV_DBG_INFO, "NVRM: received PM resume event\n");
            rm_power_management(NV_STATE_PTR(lnv), 0, rqst);
            break;

        case PM_SUSPEND:
            nv_printf(NV_DBG_INFO, "NVRM: received PM suspend event\n");
            rm_power_management(NV_STATE_PTR(lnv), 0, rqst);
            break;
#endif
        default:
            nv_printf(NV_DBG_INFO, "NVRM: received unknown PM event: 
0x%x\n", rq
st);

/Bjorn