From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 66963] Rv6xx dpm problems Date: Thu, 30 Jan 2014 02:54:17 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0767499021==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 64A07C279E for ; Wed, 29 Jan 2014 18:54:17 -0800 (PST) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============0767499021== Content-Type: multipart/alternative; boundary="1391050457.85051D766.17706"; charset="us-ascii" --1391050457.85051D766.17706 Date: Thu, 30 Jan 2014 02:54:17 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=66963 --- Comment #194 from Shawn Starr --- I wonder if something isn't being reset in VBIOS when it fails to boot after POST, I see the BIOS boot up, grub display, but after kernel starts booting (when radeon is loaded), we just die. Alex, would it be possible for the radeon driver prior to loading DPM to dump the register state of GPU and then dump it after DPM to console (so maybe netconsole or serial cable can capture the output)? So, 1) prior to rebooting machine, use a tool to dump the current register states of GPU/hw 2) upon loading radeon.ko but prior to DPM being switched on, dump the registers of GPU/hw to screen and then switch DPM on, then do the dump again (assuming this isn't going to lock up system). maybe we can narrow down something not being cleared upon booting up sometimes? Thanks, Shawn -- You are receiving this mail because: You are the assignee for the bug. --1391050457.85051D766.17706 Date: Thu, 30 Jan 2014 02:54:17 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 194 on bug 66963 from 
I wonder if something isn't being reset in VBIOS when it fails to boot after
POST, I see the BIOS boot up, grub display, but after kernel starts booting
(when radeon is loaded), we just die.

Alex, would it be possible for the radeon driver prior to loading DPM to dump
the register state of GPU and then dump it after DPM to console (so maybe
netconsole or serial cable can capture the output)?

So, 

1) prior to rebooting machine, use a tool to dump the current register states
of GPU/hw

2) upon loading radeon.ko but prior to DPM being switched on, dump the
registers of GPU/hw to screen and then switch DPM on, then do the dump again
(assuming this isn't going to lock up system).

maybe we can narrow down something not being cleared upon booting up sometimes?

Thanks,
Shawn

You are receiving this mail because:
  • You are the assignee for the bug.
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