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    SubjectRe: [Linux-fbdev-devel] Fwd: [Suspend-devel] resume not working on acer ferrari 4005 with radeonfb enabled
    Date

    > >
    > > Well, if you acquire the console sem you need to release it too :-)
    >
    > Or the console semaphore is acquired too many times.
    >
    > Christian, could you please add release_console_sem() before 'return 0'
    > and see if that makes the code work again? If not, could you add a
    > printk() in kernel/printk.c/acquire_console_sem() to see how many times it
    > is called?

    Ok, I did that and the machine resumes OK. Now I have the impression that
    accessing the rinfo struct here:

    if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
    /* Wakeup chip. Check from config space if we were powered off
    * (todo: additionally, check CLK_PIN_CNTL too)
    */
    if ((rinfo->pm_mode & radeon_pm_off) &&
    radeon_restore_pci_cfg(rinfo)) {
    if (rinfo->reinit_func != NULL) {
    rinfo->reinit_func(rinfo);
    }
    else {
    goto bail;
    }
    }
    /* If we support D2, try to resume... we should check what was
    our
    * state though... (were we really in D2 state ?). Right now,
    this code
    * is only enable on Macs so it's fine.
    */
    else if (rinfo->pm_mode & radeon_pm_d2){
    radeon_set_suspend(rinfo, 0);
    }
    rinfo->asleep = 0; ////makes it crash
    } else {
    radeon_engine_idle();
    }

    makes the resume fail. The machine locks up. I started xorg without drm/dri
    and then it goes a little further and locks up in the next steps:

    /* Restore display & engine */
    radeon_write_mode (rinfo, &rinfo->state, 1);

    But it starts to get too complicated for me :(

    Chris
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