<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - r600: linux v3.11.0-RC isn't booting with radeon.dpm=1 option in grub" href="https://bugs.freedesktop.org/show_bug.cgi?id=66963#c138">Comment # 138</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - r600: linux v3.11.0-RC isn't booting with radeon.dpm=1 option in grub" href="https://bugs.freedesktop.org/show_bug.cgi?id=66963">bug 66963</a> from <a class="email" href="mailto:agd5f@yahoo.com" title="Alex Deucher <agd5f@yahoo.com>"> Alex Deucher</a> <pre>(In reply to <a href="show_bug.cgi?id=66963#c137">comment #137</a>) > Nope definitely not reliably, but I did have it work one more time doing the > above (booting with modeset=0) after about 10 or so reboots. When it fails > I've never been able to get any debug information.. > > Any suggestions of other ways to get more debug information? Does it hang the entire system as soon as you load the driver, or only when you start X or something like that? As for debugging, you can try disabling rv6xx_dpm_set_power_state() by returning early (see the patch below). If that works, move the the return statement further and further down in the function until you can identify at which point in rv6xx_dpm_set_power_state() the hang occurs. Once we pin point that, we can debug further. diff --git a/drivers/gpu/drm/radeon/rv6xx_dpm.c b/drivers/gpu/drm/radeon/rv6xx_dpm.c index 5811d27..bfa2922 100644 --- a/drivers/gpu/drm/radeon/rv6xx_dpm.c +++ b/drivers/gpu/drm/radeon/rv6xx_dpm.c @@ -1670,6 +1670,8 @@ int rv6xx_dpm_set_power_state(struct radeon_device *rdev) struct radeon_ps *old_ps = rdev->pm.dpm.current_ps; int ret; + return 0; + pi->restricted_levels = 0; rv6xx_set_uvd_clock_before_set_eng_clock(rdev, new_ps, old_ps); @@ -2094,6 +2096,8 @@ int rv6xx_dpm_force_performance_level(struct radeon_device *rdev, { struct rv6xx_power_info *pi = rv6xx_get_pi(rdev); + return 0; + if (level == RADEON_DPM_FORCED_LEVEL_HIGH) { pi->restricted_levels = 3; } else if (level == RADEON_DPM_FORCED_LEVEL_LOW) {</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>