I have a laptop with a Radeon X200M card in it. I use Radeon DRM driver
for graphics, and it makes the system hang with display off when trying
to suspend (either to disk or to RAM). Using /sys/power/pm_test
interface revealed that it freezes when suspending devices.
I have tried both Debian repository kernel
(https://packages.debian.org/stable/linux-image-3.16.0-4-686-pae) and a
custom-built vanilla 3.18.45 kernel with this driver both built-in and
included as a module. The problem reproduces the same way. It stops to
reproduce if I delete the module radeon.ko or otherwise prevent it from
loading. The problem didn't appear before I started using DRM.
dmitriy@laptop:~$ dmesg | grep -i radeon
[ 18.520307] [drm] radeon kernel modesetting enabled.
[ 18.521610] radeon 0000:01:05.0: VRAM: 128M 0x0000000078000000 -
0x000000007FFFFFFF (128M used)
[ 18.521667] radeon 0000:01:05.0: GTT: 512M 0x0000000080000000 -
0x000000009FFFFFFF
[ 18.526251] [drm] radeon: 128M of VRAM memory ready
[ 18.526303] [drm] radeon: 512M of GTT memory ready.
[ 18.558510] [drm] radeon: 1 quad pipes, 1 z pipes initialized.
[ 18.558685] radeon 0000:01:05.0: WB enabled
[ 18.558739] radeon 0000:01:05.0: fence driver on ring 0 use gpu addr
0x0000000080000000 and cpu addr 0xf48a6000
[ 18.558896] radeon 0000:01:05.0: radeon: MSI limited to 32-bit
[ 18.558983] [drm] radeon: irq initialized.
[ 18.696262] [drm] radeon: ring at 0x0000000080001000
[ 18.697892] [drm] Radeon Display Connectors
[ 18.736547] radeon 0000:01:05.0: fb0: radeondrmfb frame buffer device
[ 18.736601] radeon 0000:01:05.0: registered panic notifier
[ 18.736660] [drm] Initialized radeon 2.40.0 20080528 for 0000:01:05.0
on minor 0
dmitriy@laptop:~$ lspci | grep -i radeon
01:05.0 VGA compatible controller: Advanced Micro Devices, Inc.
[AMD/ATI] RC410M [Mobility Radeon Xpress 200M]
dmitriy@laptop:~$ lsmod
Module Size Used by
fbcon 42796 71
bitblit 12545 1 fbcon
softcursor 12333 1 bitblit
tileblit 12517 1 fbcon
ath9k_htc 50765 0
radeon 1438969 2
ath9k_common 21530 1 ath9k_htc
ath9k_hw 369801 2 ath9k_common,ath9k_htc
ath 21707 3 ath9k_common,ath9k_htc,ath9k_hw
cfbfillrect 12474 1 radeon
cfbimgblt 12335 1 radeon
cfbcopyarea 12334 1 radeon
i2c_algo_bit 12640 1 radeon
drm_kms_helper 71528 1 radeon
ttm 67750 1 radeon
drm 207864 5 ttm,drm_kms_helper,radeon
What additional information can I collect and how? What other kernel and
driver versions can I try to see if the problem is already solved? What
other ways can I help to solve the problem in?
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