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Hi I have HP ProBook 450 G3 with ubuntu 16.04 LTS installed.

Unfortunately it freezes randomly all the time. Seems like problems with graphic card because often just before freeze sth weird happens with the screen (colors/shapes changes).

Is there any extra software which could I install or perform some checks which give me more details about the reason of fails?

//------------- Edit ---------------

Hmmm because of curiosity I have lowered linux to 15.10 but still same problems. In syslog I see sth like this:

Feb 22 09:46:20 ziemowit-hp kernel: [  737.689810] WARNING: CPU: 3 PID: 1080 at /build/linux-qcqUxa/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
Feb 22 09:46:20 ziemowit-hp kernel: [  737.689816] WARN_ON(!wm_changed)
Feb 22 09:46:20 ziemowit-hp kernel: [  737.689821] Modules linked in: nls_iso8859_1 hp_wmi sparse_keymap intel_rapl snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp arc4 coretemp snd_hda_codec_conexant snd_hda_codec_generic snd_hda_intel snd_hda_codec kvm snd_hda_core snd_hwdep crct10dif_pclmul crc32_pclmul snd_pcm iwlmvm snd_seq_midi mac80211 snd_seq_midi_event snd_rawmidi snd_seq aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd iwlwifi cfg80211 snd_seq_device joydev input_leds snd_timer serio_raw snd soundcore shpchp mei_me mei soc_button_array hp_accel lis3lv02d input_polldev tpm_infineon acpi_pad hp_wireless mac_hid parport_pc ppdev lp parport autofs4 hid_generic usbhid hid i915 psmouse i2c_algo_bit r8169 drm_kms_helper mii ahci drm libahci wmi video
Feb 22 09:46:20 ziemowit-hp kernel: [  737.689959] CPU: 3 PID: 1080 Comm: Xorg Tainted: G        W       4.2.0-42-generic #49-Ubuntu
Feb 22 09:46:20 ziemowit-hp kernel: [  737.689964] Hardware name: HP HP ProBook 450 G3/8101, BIOS N78 Ver. 01.10 04/10/2016
Feb 22 09:46:20 ziemowit-hp kernel: [  737.689971]  0000000000000286 00000000237e1db6 ffff88040ac9b518 ffffffff817f318e
Feb 22 09:46:20 ziemowit-hp kernel: [  737.689984]  ffff88040ac9b570 ffffffffc02016e8 ffff88040ac9b558 ffffffff8107cb86
Feb 22 09:46:20 ziemowit-hp kernel: [  737.689995]  ffff88040ac9b620 ffff88040ac9b6c4 ffff88040f899000 ffff88040f898000
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690006] Call Trace:
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690027]  [<ffffffff817f318e>] dump_stack+0x63/0x81
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690044]  [<ffffffff8107cb86>] warn_slowpath_common+0x86/0xc0
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690058]  [<ffffffff8107cc15>] warn_slowpath_fmt+0x55/0x70
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690138]  [<ffffffffc0140c2e>] skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690223]  [<ffffffffc0140dfb>] skl_update_wm+0x1bb/0x740 [i915]
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690279]  [<ffffffffc018df1b>] ? gen9_read32+0xfb/0x2e0 [i915]
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690335]  [<ffffffffc0175a22>] ? i915_get_vblank_timestamp+0x62/0xa0 [i915]
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690369]  [<ffffffffc014457e>] intel_update_watermarks+0x1e/0x30 [i915]
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690412]  [<ffffffffc01a8bc9>] intel_finish_crtc_commit+0x169/0x190 [i915]
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690431]  [<ffffffffc00c7df3>] drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690478]  [<ffffffffc01c20bb>] intel_atomic_commit+0x6b/0x100 [i915]
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690512]  [<ffffffffc005ce67>] drm_atomic_commit+0x37/0x60 [drm]
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690525]  [<ffffffffc00c672f>] drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690533]  [<ffffffff81214ee0>] ? poll_select_copy_remaining+0x140/0x140
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690560]  [<ffffffffc004ca5a>] __setplane_internal+0x23a/0x2f0 [drm]
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690567]  [<ffffffff81214ee0>] ? poll_select_copy_remaining+0x140/0x140
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690592]  [<ffffffffc004cc3b>] drm_mode_cursor_universal+0x12b/0x210 [drm]
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690601]  [<ffffffff817f7d7f>] ? __ww_mutex_lock+0x5f/0xa0
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690632]  [<ffffffffc004cda1>] drm_mode_cursor_common+0x81/0x180 [drm]
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690659]  [<ffffffffc0050dc0>] drm_mode_cursor_ioctl+0x50/0x70 [drm]
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690679]  [<ffffffffc0041525>] drm_ioctl+0x125/0x610 [drm]
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690703]  [<ffffffffc0050d70>] ? drm_mode_setcrtc+0x500/0x500 [drm]
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690710]  [<ffffffff81214205>] do_vfs_ioctl+0x295/0x480
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690717]  [<ffffffff81089a51>] ? __set_task_blocked+0x41/0xa0
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690723]  [<ffffffff81214469>] SyS_ioctl+0x79/0x90
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690727]  [<ffffffff8108c76e>] ? SyS_rt_sigprocmask+0x8e/0xc0
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690733]  [<ffffffff817fa072>] entry_SYSCALL_64_fastpath+0x16/0x75
Feb 22 09:46:20 ziemowit-hp kernel: [  737.690737] ---[ end trace 98941ec3ed2fec4f ]---
  • It has a "SkyLake" family CPU. The new kernel in 16.10 has many improvements. – user589808 Feb 16 '17 at 11:47
  • Did not help :( Ubuntu 16.10 - 64 bit in use. – Ziemowit Stolarczyk Feb 18 '17 at 18:29
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you should read on certification.ubuntu.com to find the most suitable version of ubuntu for your laptop. In your case, i think you should install ubuntu 14.04 LTS for HP probook 450 (my laptop is probook 450 G2)

goodluck!

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Ok after checking a few versions of Ubuntu I have checked it with Windows 10.

Result is the same so unpredictable fails of system.

Seems that hardware is broken. I need to give it back to seler.

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