Public bug reported:
Please see below an example of it taking 113 seconds to suspend to RAM/memory
If I switch to console (CTRL-ALT-F1) and stop lightdm so that X is stopped,
suspend happens immediately.
So, I have tracked this down to a problem with the radeon driver.
[ 183.332816] ahci 0000:00:12.0: PCI INT A disabled
[ 295.241074] radeon 0000:01:05.0: PCI INT B disabled
[ 295.260100] PM: suspend of devices complete after 113029.746 msecs
[ 295.260105] PM: suspend devices took 113.030 seconds
[ 295.260107] ------------[ cut here ]------------
[ 295.260114] WARNING: at kernel/power/suspend_test.c:53
suspend_test_finish+0x86/0x90()
[ 295.260117] Hardware name: Inspiron 1521
[ 295.260119] Component: suspend devices, time: 113030
[ 295.260121] Modules linked in: fuse bluetooth ip6table_filter ip6_tables
ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state
nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp iptable_filter
ip_tables x_tables bridge stp kvm_amd kvm speedstep_lib cryptd aes_x86_64
aes_generic nfsd exportfs nfs lockd fscache auth_rpcgss nfs_acl sunrpc
binfmt_misc dm_crypt arc4 b43 mac80211 snd_hda_codec_idt cfg80211 snd_hda_intel
snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event
r852 snd_seq uvcvideo videodev sm_common nand v4l2_compat_ioctl32 dell_laptop
nand_ids dell_wmi sp5100_tco snd_timer edac_core nand_ecc dcdbas snd_seq_device
snd mtd i2c_piix4 edac_mce_amd psmouse k8temp sparse_keymap serio_raw soundcore
snd_page_alloc ssb shpchp radeon firewire_ohci firewire_core ttm sdhci_pci
crc_itu_t sdhci drm_kms_helper video drm pata_atiixp i2c_algo_bit ahci libahci
[ 295.260188] Pid: 2765, comm: pm-suspend Not tainted 3.1.0+ #4
[ 295.260191] Call Trace:
[ 295.260198] [<ffffffff8106060f>] warn_slowpath_common+0x7f/0xc0
[ 295.260202] [<ffffffff81060706>] warn_slowpath_fmt+0x46/0x50
[ 295.260206] [<ffffffff810a31e6>] suspend_test_finish+0x86/0x90
[ 295.260210] [<ffffffff810a2d4a>] suspend_devices_and_enter+0x8a/0x310
[ 295.260214] [<ffffffff810a30ed>] enter_state+0x11d/0x150
[ 295.260217] [<ffffffff810a2507>] state_store+0xb7/0xf0
[ 295.260221] [<ffffffff812cc38f>] kobj_attr_store+0xf/0x30
[ 295.260225] [<ffffffff811cf21f>] sysfs_write_file+0xef/0x170
[ 295.260229] [<ffffffff8115f0a3>] vfs_write+0xb3/0x180
[ 295.260232] [<ffffffff8115f3ca>] sys_write+0x4a/0x90
[ 295.260237] [<ffffffff815c92c2>] system_call_fastpath+0x16/0x1b
[ 295.260240] ---[ end trace ff32f9c6b0d1420a ]---
[ 295.300208] PM: late suspend of devices complete after 39.960 msecs
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: radeon
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https://bugs.launchpad.net/bugs/889427
Title:
radeon takes over 100 seconds to suspend to memory
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