About once a day, since upgrading from 2.6.12.5 to 2.6.14.2, I have a problem with the following symptoms. This is on a ThinkPad T42, and I'm using swsusp2 2.2-rc11. o Kicker (the KDE panel) becomes unresponsive. The process is still there, but I can't kill it (even with -9). o My screen session gets weirded out. Every time I open a new window inside of screen, or close one, I get an error at the top of my xterm saying "can't write /var/run/utmp" or something like this At this point, I check dmesg and find a bunch of errors looking like this: ACPI-0213: *** Error: Method reached maximum reentrancy limit (255) ACPI-0508: *** Error: Method execution failed [\_SB_.PCI0.LPC_.EC__.BAT0._BIF] (Node c20f9480), AE_AML_METHOD_LIMIT ACPI-0213: *** Error: Method reached maximum reentrancy limit (255) ACPI-0508: *** Error: Method execution failed [\_SB_.PCI0.LPC_.EC__.BAT0._BIF] (Node c20f9480), AE_AML_METHOD_LIMIT ACPI-0213: *** Error: Method reached maximum reentrancy limit (255) ACPI-0508: *** Error: Method execution failed [\_SB_.PCI0.LPC_.EC__.BAT0._BIF] (Node c20f9480), AE_AML_METHOD_LIMIT ACPI-0213: *** Error: Method reached maximum reentrancy limit (255) ACPI-0508: *** Error: Method execution failed [\_SB_.PCI0.LPC_.EC__.BAT0._BIF] (Node c20f9480), AE_AML_METHOD_LIMIT It's not always the exact same error condition, but the format is always like this. At this point I reboot to clear up these problems. What will happen is that laptop_mode won't shut down properly, but I am able to kill it from another vt with just a SIGTERM. Then shutdown continues. After the reboot, sometimes my touchpad will be on another device node /dev/input/event# and X won't start as a result. The touchpad still works if I swich the line in xorg.conf, BUT if I reboot again the touchpad goes back to its normal node. This happens about half the time that I've run into the overall problem. Today, for the first time that I noticed at least, I also got an oops. Here it is: Unable to handle kernel paging request at virtual address 4b87ad6e printing eip: c01f6b76 *pde = 00000000 Oops: 0000 [#1] Modules linked in: uhci_hcd ehci_hcd vmnet parport_pc parport vmmon arc4 ieee80211_crypt_wep ieee80211_crypt nfs lockd sunrpc cisco_ipsec ipt_state iptable_filter iptable_nat ip_nat ip_conntrack iptable_mangle ip_tables pcmcia yenta_socket rsrc_nonstatic pcmcia_core snd_pcm_oss snd_mixer_oss snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_pcm snd_timer snd soundcore snd_page_alloc nls_iso8859_1 ntfs nls_base nvram usbhid usb_storage usbcore tun e1000 evdev fglrx intel_agp agpgart rtc speedstep_centrino freq_table ibm_acpi CPU: 0 EIP: 0060:[<c01f6b76>] Tainted: P M VLI EFLAGS: 00210202 (2.6.14.2) EIP is at acpi_ut_update_object_reference+0x26/0x140 eax: c20d75c0 ebx: 4b87ad6e ecx: d9ff5d78 edx: db6fad84 esi: db6fad84 edi: d9ff5d78 ebp: 00000000 esp: d9ff5d74 ds: 007b es: 007b ss: 0068 Process acpi (pid: 24336, threadinfo=d9ff4000 task=d9d2b030) Stack: 00000000 db6fac64 c210818c c210818c 00000000 db64f1c0 c01f6ca8 c210818c 00000000 c210818c c01ecd39 c210818c c210818c db64f1c0 db64f000 00000001 00000009 c01e8874 db64f1c0 db64f000 db64f1c0 db64f000 c01e43d8 db64f1c0 Call Trace: [<c01f6ca8>] acpi_ut_add_reference+0x18/0x1c [<c01ecd39>] acpi_ex_resolve_node_to_value+0xc1/0xdc [<c01e8874>] acpi_ex_resolve_to_value+0x40/0x4b [<c01e43d8>] acpi_ds_resolve_operands+0x1e/0x38 [<c01e3694>] acpi_ds_exec_end_op+0x1aa/0x332 [<c01f11c6>] acpi_ps_parse_loop+0x53e/0x844 [<c01f0b01>] acpi_ps_parse_aml+0x4e/0x1d5 [<c01f19b2>] acpi_ps_execute_pass+0x72/0x84 [<c01f18e2>] acpi_ps_execute_method+0x4e/0x70 [<c01eeffd>] acpi_ns_execute_control_method+0x3e/0x4b [<c01eefa8>] acpi_ns_evaluate_by_handle+0x76/0x8d [<c01eeea5>] acpi_ns_evaluate_relative+0xa9/0xc5 [<c01ee77f>] acpi_evaluate_object+0x10b/0x1cc [<c01c0003>] digest+0x73/0x110 [<c01f93cc>] acpi_battery_get_info+0x64/0x115 [<c01f9746>] acpi_battery_read_info+0x41/0x1e0 [<c017f372>] seq_read+0xf2/0x2e0 [<c015f636>] vfs_read+0xb6/0x180 [<c015f9e1>] sys_read+0x51/0x80 [<c0102fef>] sysenter_past_esp+0x54/0x75 Code: fe ff ff 58 c3 55 57 56 53 51 51 8b 5c 24 1c 0f b7 6c 24 20 c7 44 24 04 00 00 00 00 85 db c7 04 24 00 00 00 00 0f 84 e6 00 00 00 <80> 3b 0f 0f 84 dd 00 00 00 0f b6 43 01 83 e8 04 83 f8 10 0f 87 As you can see, it looks like there some ACPI stuff going on there. This whole thing is more of an annoyance than anything else, but I figured since I got an oops this time I should report it. --Geoff Mishkin <[email protected]>
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