Bug#897060: Some observations
Hello,
I have similar symptoms on a much older 32 bit laptop running sid.
My notes:
No problems with kernel 4.14 (I currently use 4.14.0-3-686-pae, aka 4.14.17-1).
All (Debian compiled) 4.15 and 4.16 I've tried are randomly affected (the very same kernel will sometimes boot OK, sometimes not).
When the graphical screen fails to come up, no key combination will restore the screen, but in fact the machine is running: SSHd works, and I can (blindly) login on tty2. "poweroff" kills SSHd, but the machine does not power down.
I suppose bisecting between 4.14 and 4.15 would be useful, but I'm not sure it's practical with a random kernel problem and a slow machine.
If there is anything else I can test, please ask.
Best regards,
Sebastien
Dmesg output (truncated):
[ 7.618511] pci 0000:00:00.0: Intel 945GM Chipset
[ 7.618535] pci 0000:00:00.0: detected gtt size: 262144K total, 262144K mappable
[ 7.619103] pci 0000:00:00.0: detected 8192K stolen memory
[ 7.621865] [drm] Replacing VGA console driver
[ 7.622607] Console: switching to colour dummy device 80x25
[ 7.624237] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 7.624240] [drm] Driver supports precise vblank timestamp query.
[ 7.625131] i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem
[ 7.625498] iwl3945 0000:02:00.0: Tunable channels: 13 802.11bg, 23 802.11a channels
[ 7.625501] iwl3945 0000:02:00.0: Detected Intel Wireless WiFi Link 3945ABG
[ 7.698373] ieee80211 phy0: Selected rate control algorithm 'iwl-3945-rs'
[ 7.743689] iTCO_vendor_support: vendor-support=0
[ 7.750950] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11
[ 7.751014] iTCO_wdt: Found a ICH7-M or ICH7-U TCO device (Version=2, TCOBASE=0x1060)
[ 7.752398] iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0)
[ 7.835042] BUG: unable to handle kernel NULL pointer dereference at 00000000
[ 7.835059] IP: (null)
[ 7.835063] *pdpt = 00000000360b4001 *pde = 0000000000000000
[ 7.835072] Oops: 0010 [#1] SMP
[ 7.835077] Modules linked in: iTCO_wdt iTCO_vendor_support arc4 i915(+) joydev evdev snd_hda_codec_conexant serio_raw snd_hda_codec_generic iwl3945 pcspkr iwlegacy snd_hda_intel mac80211 drm_kms_helper r852 snd_hda_codec sm_common snd_hda_core sg snd_hwdep nand snd_pcm lpc_ich r592 nand_ecc cfg80211 nand_bch memstick bch snd_timer mtd rfkill drm snd i2c_algo_bit shpchp rng_core soundcore battery ac video button cuse fuse coretemp cpufreq_userspace acpi_cpufreq firewire_sbp2 sunrpc loop ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 fscrypto ecb crypto_simd cryptd aes_i586 raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c crc32c_generic raid1 raid0 multipath linear md_mod sd_mod sr_mod cdrom ata_generic firewire_ohci ahci libahci sdhci_pci cqhci
[ 7.835195] sdhci mmc_core ata_piix firewire_core crc_itu_t psmouse i2c_i801 libata scsi_mod ehci_pci e100 mii uhci_hcd ehci_hcd usbcore usb_common thermal
[ 7.835222] CPU: 1 PID: 321 Comm: systemd-udevd Not tainted 4.16.0-2-686-pae #1 Debian 4.16.12-1
[ 7.835228] Hardware name: FUJITSU SIEMENS Amilo Si 1520/10AD, BIOS 1.01 03/08/2006
[ 7.835234] EIP: (null)
[ 7.835238] EFLAGS: 00010202 CPU: 1
[ 7.835244] EAX: f2fea000 EBX: f2fea000 ECX: 00000000 EDX: f60d1c78
[ 7.835251] ESI: f8b1d495 EDI: f8b1d48d EBP: f60d1c94 ESP: f60d1c54
[ 7.835258] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[ 7.835264] CR0: 80050033 CR2: 00000000 CR3: 36a8bcc0 CR4: 000006f0
[ 7.835271] Call Trace:
[ 7.835378] ? intel_modeset_setup_hw_state+0x2fc/0xee0 [i915]
[ 7.835390] ? _cond_resched+0x17/0x40
[ 7.835464] __intel_display_resume+0x1c/0xc0 [i915]
[ 7.835537] intel_display_resume+0xcc/0xf0 [i915]
[ 7.835610] intel_lid_notify+0xc7/0xd0 [i915]
[ 7.835682] ? intel_lvds_mode_valid+0x50/0x50 [i915]
[ 7.835691] notifier_call_chain+0x51/0x80
[ 7.835699] blocking_notifier_call_chain+0x3b/0x50
[ 7.835707] acpi_lid_notify_state+0x9a/0x260 [button]
[ 7.835714] acpi_lid_update_state+0x20/0x30 [button]
[ 7.835722] acpi_lid_initialize_state+0x1e/0x30 [button]
[ 7.835729] acpi_lid_input_open+0x3b/0x50 [button]
[ 7.835737] input_open_device+0x78/0xa0
[ 7.835745] evdev_open+0x16b/0x1b0 [evdev]
[ 7.835752] ? evdev_event+0x50/0x50 [evdev]
[ 7.835760] chrdev_open+0xa3/0x1a0
[ 7.835769] do_dentry_open+0x1ac/0x2d0
[ 7.835775] ? cdev_put.part.1+0x20/0x20
[ 7.835781] vfs_open+0x41/0x70
[ 7.835789] path_openat+0x560/0x1290
[ 7.835797] ? snprintf+0x15/0x20
[ 7.835803] ? input_print_bitmap+0xdb/0xf0
[ 7.835811] do_filp_open+0x6a/0xd0
[ 7.835820] ? __alloc_fd+0x36/0x160
[ 7.835827] do_sys_open+0x1b5/0x250
[ 7.835834] SyS_openat+0x1b/0x20
[ 7.835841] do_fast_syscall_32+0x7f/0x1b0
[ 7.835849] entry_SYSENTER_32+0x4e/0x7c
[ 7.835855] EIP: 0xb7facd09
[ 7.835859] EFLAGS: 00000246 CPU: 1
[ 7.835865] EAX: ffffffda EBX: ffffff9c ECX: 01fdc890 EDX: 00088000
[ 7.835872] ESI: 00000000 EDI: 004cb61d EBP: 01fdc890 ESP: bfa24b40
[ 7.835879] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b
[ 7.835885] Code: Bad EIP value.
[ 7.835896] EIP: (null) SS:ESP: 0068:f60d1c54
[ 7.835901] CR2: 0000000000000000
[ 7.835988] ---[ end trace ae6d415cb5d0cb83 ]---
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