Up-to-date Debian 7.6 here, I've noticed that after coming back to work after lunch break hour (no suspend, just screen lock), Dolphin freezes. Even new Dolphin instances locks up.
I am not sure how it fixes up, some times I just restart system. I've tried to run: $stat /media/public And kernel.log printed this (after some time): Sep 4 13:31:50 acer kernel: [78120.680627] INFO: task stat:26929 blocked for more than 120 seconds. Sep 4 13:31:50 acer kernel: [78120.680632] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Sep 4 13:31:50 acer kernel: [78120.680636] stat D ffff88013fd13780 0 26929 26928 0x00000003 Sep 4 13:31:50 acer kernel: [78120.680645] ffff88008131b8c0 0000000000000082 00007f9f00000000 ffff88013aeee180 Sep 4 13:31:50 acer kernel: [78120.680655] 0000000000013780 ffff88007441ffd8 ffff88007441ffd8 ffff88008131b8c0 Sep 4 13:31:50 acer kernel: [78120.680664] ffff88013fd165c0 000000013fd165c0 0000000000000246 ffff8801205e1220 Sep 4 13:31:50 acer kernel: [78120.680673] Call Trace: Sep 4 13:31:50 acer kernel: [78120.680681] [<ffffffff8134fa44>] ? __mutex_lock_common.isra.5+0xff/0x164 Sep 4 13:31:50 acer kernel: [78120.680689] [<ffffffff8134f932>] ? mutex_lock+0x1a/0x2d Sep 4 13:31:50 acer kernel: [78120.680695] [<ffffffff8115534a>] ? load_nls_default+0xe/0x1f Sep 4 13:31:50 acer kernel: [78120.680706] [<ffffffffa10880d2>] ? cifs_reconnect_tcon+0x197/0x2b0 [cifs] Sep 4 13:31:50 acer kernel: [78120.680714] [<ffffffff81103a33>] ? walk_component+0x3bf/0x406 Sep 4 13:31:50 acer kernel: [78120.680726] [<ffffffffa1088af6>] ? smb_init+0x24/0x69 [cifs] Sep 4 13:31:50 acer kernel: [78120.680739] [<ffffffffa108d7fb>] ? CIFSSMBQPathInfo+0x63/0x21c [cifs] Sep 4 13:31:50 acer kernel: [78120.680746] [<ffffffff810ece5f>] ? kmem_cache_alloc_trace+0xbe/0xce Sep 4 13:31:50 acer kernel: [78120.680762] [<ffffffffa109e518>] ? cifs_get_inode_info+0x108/0x417 [cifs] Sep 4 13:31:50 acer kernel: [78120.680776] [<ffffffffa1097260>] ? build_path_from_dentry+0xc1/0x1ea [cifs] Sep 4 13:31:50 acer kernel: [78120.680783] [<ffffffff810ecd8f>] ? __kmalloc+0x100/0x112 Sep 4 13:31:50 acer kernel: [78120.680797] [<ffffffffa10972c0>] ? build_path_from_dentry+0x121/0x1ea [cifs] Sep 4 13:31:50 acer kernel: [78120.680813] [<ffffffffa109fac3>] ? cifs_revalidate_dentry_attr+0x11e/0x16a [cifs] Sep 4 13:31:50 acer kernel: [78120.680828] [<ffffffffa109fbb9>] ? cifs_getattr+0x68/0xeb [cifs] Sep 4 13:31:50 acer kernel: [78120.680835] [<ffffffff810fe3e2>] ? vfs_getattr+0x1c/0x62 Sep 4 13:31:50 acer kernel: [78120.680841] [<ffffffff810fe470>] ? vfs_fstatat+0x48/0x60 Sep 4 13:31:50 acer kernel: [78120.680847] [<ffffffff810fe5bb>] ? sys_newlstat+0x12/0x2b Sep 4 13:31:50 acer kernel: [78120.680856] [<ffffffff81016b91>] ? ptrace_report_syscall.isra.11+0x27/0x4f Sep 4 13:31:50 acer kernel: [78120.680865] [<ffffffff810178c6>] ? syscall_trace_enter+0xb3/0x158 Sep 4 13:31:50 acer kernel: [78120.680871] [<ffffffff81355608>] ? tracesys+0x7a/0xde Sep 4 13:31:50 acer kernel: [78120.680878] [<ffffffff81355667>] ? tracesys+0xd9/0xde I'm using Wireless interface. Some more info: $ sudo ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen 1000 link/ether 00:1b:24:41:7d:0f brd ff:ff:ff:ff:ff:ff 3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000 link/ether 00:1b:77:08:20:29 brd ff:ff:ff:ff:ff:ff inet 192.168.1.10/24 brd 192.168.1.255 scope global wlan0 inet6 fe80::21b:77ff:fe08:2029/64 scope link valid_lft forever preferred_lft forever $ sudo lspci 00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 03) 00:01.0 PCI bridge: Intel Corporation Mobile PM965/GM965/GL960 PCI Express Root Port (rev 03) 00:1a.0 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 03) 00:1a.1 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 03) 00:1a.7 USB controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 03) 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03) 00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 03) 00:1c.3 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 4 (rev 03) 00:1c.5 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 6 (rev 03) 00:1d.0 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 03) 00:1d.1 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 03) 00:1d.2 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 03) 00:1d.7 USB controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 03) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3) 00:1f.0 ISA bridge: Intel Corporation 82801HM (ICH8M) LPC Interface Controller (rev 03) 00:1f.1 IDE interface: Intel Corporation 82801HM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 03) 00:1f.2 SATA controller: Intel Corporation 82801HM/HEM (ICH8M/ICH8M-E) SATA Controller [AHCI mode] (rev 03) 00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 03) 01:00.0 VGA compatible controller: NVIDIA Corporation G84 [GeForce 8600M GT] (rev a1) 06:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02) 08:00.0 Ethernet controller: Broadcom Corporation NetLink BCM5787M Gigabit Ethernet PCI Express (rev 02) 0a:09.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05) 0a:09.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22) 0a:09.2 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12) 0a:09.3 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 12) $ uname -a Linux acer 3.2.0-4-amd64 #1 SMP Debian 3.2.60-1+deb7u3 x86_64 GNU/Linux $ lsmod Module Size Used by nfnetlink_log 17212 0 nfnetlink 12906 1 nfnetlink_log des_generic 20851 0 ecb 12737 0 md4 12529 0 hmac 12835 1 nls_utf8 12456 1 cifs 243028 2 cryptd 14517 0 aes_x86_64 16843 3 aes_generic 33026 1 aes_x86_64 pci_stub 12429 1 vboxpci 19096 0 vboxnetadp 25443 0 vboxnetflt 23657 0 vboxdrv 304503 3 vboxpci,vboxnetadp,vboxnetflt parport_pc 22364 0 ppdev 12763 0 lp 17149 0 parport 31858 3 lp,ppdev,parport_pc bnep 17567 2 rfcomm 33700 0 bluetooth 119455 10 rfcomm,bnep binfmt_misc 12957 1 uinput 17440 1 nfsd 216167 2 nfs 308353 0 nfs_acl 12511 2 nfs,nfsd auth_rpcgss 37143 2 nfs,nfsd fscache 36739 2 nfs,cifs lockd 67306 2 nfs,nfsd sunrpc 173730 6 lockd,auth_rpcgss,nfs_acl,nfs,nfsd loop 22641 0 usbhid 36418 0 uvcvideo 57744 0 videodev 70889 1 uvcvideo v4l2_compat_ioctl32 16655 1 videodev media 18148 2 videodev,uvcvideo hid 81372 1 usbhid nvidia 11264793 70 snd_hda_codec_realtek 188851 1 arc4 12458 2 iwl3945 51683 0 snd_hda_intel 26259 4 iwl_legacy 48206 1 iwl3945 snd_hda_codec 78031 2 snd_hda_intel,snd_hda_codec_realtek mac80211 192806 2 iwl_legacy,iwl3945 snd_hwdep 13186 1 snd_hda_codec acer_wmi 26081 0 snd_pcm 68083 3 snd_hda_codec,snd_hda_intel cfg80211 137243 3 mac80211,iwl_legacy,iwl3945 sparse_keymap 12760 1 acer_wmi rfkill 19012 5 cfg80211,acer_wmi,bluetooth joydev 17266 0 r592 17835 0 snd_page_alloc 13003 2 snd_pcm,snd_hda_intel r852 17846 0 sm_common 16541 1 r852 nand 44280 2 sm_common,r852 nand_ecc 12487 1 nand nand_ids 12313 1 nand snd_seq 45126 0 snd_seq_device 13176 1 snd_seq snd_timer 22917 2 snd_seq,snd_pcm i2c_i801 16870 0 i2c_core 23876 3 i2c_i801,nvidia,videodev mtd 24193 2 nand,sm_common iTCO_wdt 17081 0 iTCO_vendor_support 12704 1 iTCO_wdt memstick 13698 1 r592 ac 12624 0 acpi_cpufreq 12935 1 video 17683 0 battery 13146 0 mperf 12453 1 acpi_cpufreq wmi 13243 1 acer_wmi evdev 17562 19 processor 28149 3 acpi_cpufreq power_supply 13475 2 battery,ac button 12937 0 snd 52893 15 snd_timer,snd_seq_device,snd_seq,snd_pcm,snd_hwdep,snd_hda_codec,snd_hda_intel,snd_hda_codec_realtek psmouse 69265 0 serio_raw 12931 0 pcspkr 12579 0 coretemp 12898 0 soundcore 13065 1 snd ext4 350763 1 crc16 12343 2 ext4,bluetooth jbd2 62115 1 ext4 mbcache 13114 1 ext4 sg 25874 0 sr_mod 21899 0 cdrom 35401 1 sr_mod sd_mod 36136 2 crc_t10dif 12348 1 sd_mod ata_generic 12479 0 ata_piix 29535 0 ahci 24997 1 libahci 22941 1 ahci libata 140630 4 libahci,ahci,ata_piix,ata_generic firewire_ohci 35772 0 thermal 17383 0 thermal_sys 18040 3 thermal,processor,video uhci_hcd 26865 0 scsi_mod 162269 4 libata,sd_mod,sr_mod,sg firewire_core 48449 1 firewire_ohci crc_itu_t 12347 1 firewire_core sdhci_pci 17976 0 ehci_hcd 40249 0 sdhci 27053 1 sdhci_pci mmc_core 68400 2 sdhci,sdhci_pci tg3 119064 0 libphy 19057 1 tg3 usbcore 128741 6 ehci_hcd,uhci_hcd,uvcvideo,usbhid usb_common 12354 1 usbcore