Re: kern/50032: kernel hang on starting Xserver with RADEON HD 5450

[Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>]

The following reply was made to PR kern/50032; it has been noted by GNATS.

From: Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: mrg%eterna.com.au@localhost, tsutsui%ceres.dti.ne.jp@localhost
Subject: Re: kern/50032: kernel hang on starting Xserver with RADEON HD 5450
Date: Sat, 22 Aug 2015 22:58:43 +0900

 > It looks the kernel hangs only if the display is connected to HDMI port.
 > Using DVI instead of HDMI makes Xserver starts/quits properly.
 > 
 > > does attempting to drop into ddb work?
 > 
 > No idea how to get console, but it seems to freeze
 > because there is "ddb.onpanic?=0" in sysctl.conf as the default setting.
 
 I've tried serial console and 7.0_RC3, but I cannot get ddb prompt
 on the hangup by sending BREAK after xinit on ttyE0 wscons terminal.
 
 The following messages are printed on console just before hangup:
 ---
 hdafg0: unsol: tag=1
 hdafg0: unsol: display device hotplug
 ---
 
 I also get more verbose logs by the following command on ttyE0:
 
 (command on ttyE0 terminal)
 ---
 % xinit -- -verbose 10 -logverbose 10 >& /dev/console
 ---
 
 (logs on com0 console)
 ---
 
  :
 
 (II) RADEON(0): Printing probed modes for output DVI-0
 (II) RADEON(0): Modeline "1920x1080"x60.0  148.50  1920 2008 2052 2200  1080 1084 1089 1125 +hsync +vsync (67.5 kHz)
 (II) RADEON(0): Modeline "1680x1050"x59.9  119.00  1680 1728 1760 1840  1050 1053 1059 1080 +hsync -vsync (64.7 kHz)
 (II) RADEON(0): Modeline "1600x900"x60.0  118.96  1600 1696 1864 2128  900 901 904 932 -hsync +vsync (55.9 kHz)
 (II) RADEON(0): Modeline "1280x1024"x75.0  135.00  1280 1296 1440 1688  1024 1025 1028 1066 +hsync +vsync (80.0 kHz)
 (II) RADEON(0): Modeline "1280x1024"x60.0  108.00  1280 1328 1440 1688  1024 1025 1028 1066 +hsync +vsync (64.0 kHz)
 (II) RADEON(0): Modeline "1280x960"x75.0  129.94  1280 1368 1504 1728  960 961 964 1002 -hsync +vsync (75.2 kHz)
 (II) RADEON(0): Modeline "1360x768"x59.8   84.75  1366 1431 1567 1776  768 771 781 798 -hsync +vsync (47.7 kHz)
 (II) RADEON(0): Modeline "1152x864"x75.0  108.00  1152 1216 1344 1600  864 865 868 900 +hsync +vsync (67.5 kHz)
 (II) RADEON(0): Modeline "1024x768"x75.1   78.80  1024 1040 1136 1312  768 769 772 800 +hsync +vsync (60.1 kHz)
 (II) RADEON(0): Modeline "1024x768"x70.1   75.00  1024 1048 1184 1328  768 771 777 806 -hsync -vsync (56.5 kHz)
 (II) RADEON(0): Modeline "1024x768"x60.0   65.00  1024 1048 1184 1344  768 771 777 806 -hsync -vsync (48.4 kHz)
 (II) RADEON(0): Modeline "832x624"x74.6   57.28  832 864 928 1152  624 625 628 667 -hsync -vsync (49.7 kHz)
 (II) RADEON(0): Modeline "800x600"x72.2   50.00  800 856 976 1040  600 637 643 666 +hsync +vsync (48.1 kHz)
 (II) RADEON(0): Modeline "800x600"x75.0   49.50  800 816 896 1056  600 601 604 625 +hsync +vsync (46.9 kHz)
 (II) RADEON(0): Modeline "800x600"x60.3   40.00  800 840 968 1056  600 601 605 628 +hsync +vsync (37.9 kHz)
 (II) RADEON(0): Modeline "800x600"x56.2   36.00  800 824 896 1024  600 601 603 625 +hsync +vsync (35.2 kHz)
 (II) RADEON(0): Modeline "640x480"x75.0   31.50  640 656 720 840  480 481 484 500 -hsync -vsync (37.5 kHz)
 (II) RADEON(0): Modeline "640x480"x72.8   31.50  640 664 704 832  480 489 491 520 -hsync -vsync (37.9 kHz)
 (II) RADEON(0): Modeline "640x480"x66.7   30.24  640 704 768 864  480 483 486 525 -hsync -vsync (35.0 kHz)
 (II) RADEON(0): Modeline "640x480"x60.0   25.20  640 656 752 800  480 490 492 525 -hsync -vsync (31.5 kHz)
 (II) RADEON(0): Modeline "720x400"x70.1   28.32  720 738 846 900  400 412 414 449 -hsync +vsync (31.5 kHz)
 (II) RADEON(0): EDID for output VGA-0
 (II) RADEON(0): Output HDMI-0 connected
 (II) RADEON(0): Output DVI-0 connected
 (II) RADEON(0): Output VGA-0 disconnected
 (II) RADEON(0): Using exact sizes for initial modes
 (II) RADEON(0): Output HDMI-0 using initial mode 1920x1080
 (II) RADEON(0): Output DVI-0 using initial mode 1920x1080
 (II) RADEON(0): Using default gamma of (1.0, 1.0, 1.0) unless otherwise stated.
 (II) RADEON(0): mem size init: gart size :3fdee000 vram size: s:40000000 visible:3f7d7000
 (II) RADEON(0): EXA: Driver will allow EXA pixmaps in VRAM
 (**) RADEON(0): Display dimensions: (710, 400) mm
 (**) RADEON(0): DPI set to (68, 68)
 (II) Loading sub module "fb"
 (II) LoadModule: "fb"
 (II) Loading /usr/X11R7/lib/modules/libfb.so
 (II) Module fb: vendor="X.Org Foundation"
         compiled for 1.10.6, module version = 1.0.0
         ABI class: X.Org ANSI C Emulation, version 0.4
 (II) Loading sub module "ramdac"
 (II) LoadModule: "ramdac"
 (II) Module "ramdac" already built-in
 (II) UnloadModule: "vesa"
 (II) Unloading vesa
 (--) Depth 24 pixmap format is 32 bpp
 (II) RADEON(0): [DRI2] Setup complete
 (II) RADEON(0): [DRI2]   DRI driver: r600
 (II) RADEON(0): [DRI2]   VDPAU driver: r600
 (II) RADEON(0): Front buffer size: 8160K
 (II) RADEON(0): VRAM usage limit set to 928796K
 (==) RADEON(0): Backing store disabled
 (II) RADEON(0): Direct rendering enabled
 (II) RADEON(0): Initializing Acceleration
 (II) EXA(0): Driver allocated offscreen pixmaps
 (II) EXA(0): Driver registered support for the following opehdafg0: unsol: tag=1
 rations:
 (II)  hdafg0: unsol: display device hotplug
 
 ---
 
 Something wrong in the "hdafg0" device?
 
 ---
 Izumi Tsutsui