Chère Madame, cher Monsieur, I have just installed  Paramétrage de linux-headers-4.16.0-041600rc2 (4.16.0-041600rc2.201802190311) ... Paramétrage de linux-headers-4.16.0-041600rc2-lowlatency (4.16.0-041600rc2.201802190311) ... Paramétrage de linux-image-4.16.0-041600rc2-lowlatency (4.16.0-041600rc2.201802190311) ... I will keep "you" informed on the issue Cordialement ESSAISSI, Rémi Julien Mardi 20-02-2018 à 17:43 Joseph Salisbury a écrit: Did this issue start happening after an update/upgrade?  Was there a prior kernel version where you were not having this particular problem? Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.16 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16-rc2 ** Changed in: linux (Ubuntu)    Importance: Undecided => Medium -- You received this bug notification because you are subscribed to the bug report. https://bugs.launchpad.net/bugs/1749744 Title:   kernel warning Status in linux package in Ubuntu:   Incomplete Bug description:   I get very often this kernel oops:   93228.008170] WARN_ON(i915_gem_object_has_pinned_pages(obj))   [93228.008241] ------------[ cut here ]------------   [93228.008341] WARNING: CPU: 0 PID: 25751 at /build/linux-UKCsxy/linux-4.13.0/drivers/gpu/drm/i915/i915_gem.c:4422 __i915_gem_free_objects+0x2ba/0x2f0 [i915]   [93228.008342] Modules linked in: ccm xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack libcrc32c iptable_mangle iptable_raw iptable_security ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter rfcomm bnep cdc_ether usbnet mii cdc_wdm cdc_acm coretemp kvm_intel snd_hda_codec_conexant snd_hda_codec_generic kvm irqbypass btusb btrtl snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm btbcm btintel snd_seq_midi input_leds serio_raw bluetooth arc4 snd_seq_midi_event thinkpad_acpi nvram wmi_bmof lpc_ich snd_rawmidi   [93228.008402]  ecdh_generic iwldvm mac80211 iwlwifi cfg80211 snd_seq snd_seq_device snd_timer shpchp snd mei_me mei soundcore mac_hid binfmt_misc sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid hid psmouse i915 ahci libahci i2c_algo_bit drm_kms_helper e1000e syscopyarea ptp sysfillrect sysimgblt fb_sys_fops pps_core drm wmi video   [93228.008440] CPU: 0 PID: 25751 Comm: kworker/0:0 Tainted: G        W       4.13.0-32-lowlatency #35-Ubuntu   [93228.008442] Hardware name: LENOVO 7470WGU/7470WGU, BIOS 6DET72WW (3.22 ) 10/25/2012   [93228.008485] Workqueue: events __i915_gem_free_work [i915]   [93228.008488] task: ffff881ab17d4a00 task.stack: ffffa03e01ca8000   [93228.008531] RIP: 0010:__i915_gem_free_objects+0x2ba/0x2f0 [i915]   [93228.008533] RSP: 0018:ffffa03e01cabe00 EFLAGS: 00010286   [93228.008535] RAX: 000000000000002e RBX: ffff881a37abcdc0 RCX: ffffffffa2a62fc8   [93228.008537] RDX: 0000000000000000 RSI: 0000000000000092 RDI: 0000000000000283   [93228.008538] RBP: ffffa03e01cabe30 R08: 0000000000000708 R09: ffffffffa2f73600   [93228.008540] R10: ffffa03e01cabdd8 R11: 0000000000000000 R12: ffff8819f5e0ec00   [93228.008541] R13: ffff881aac343f2c R14: ffff881aac340000 R15: 0000000000001000   [93228.008544] FS:  0000000000000000(0000) GS:ffff881abbc00000(0000) knlGS:0000000000000000   [93228.008546] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033   [93228.008547] CR2: 0000562440d00d80 CR3: 0000000130214000 CR4: 00000000000006f0   [93228.008549] Call Trace:   [93228.008597]  __i915_gem_free_work+0x38/0x50 [i915]   [93228.008604]  process_one_work+0x1de/0x430   [93228.008607]  worker_thread+0x48/0x400   [93228.008611]  kthread+0x125/0x140   [93228.008613]  ? process_one_work+0x430/0x430   [93228.008615]  ? kthread_create_on_node+0x70/0x70   [93228.008620]  ret_from_fork+0x1f/0x30   [93228.008622] Code: ff e8 18 cd 3a e1 e9 b6 fd ff ff 48 89 df e8 4e ea ff ff e9 b2 fe ff ff 48 c7 c6 88 b0 55 c0 48 c7 c7 95 c5 54 c0 e8 17 2d 49 e1 ff c7 83 d0 01 00 00 00 00 00 00 e9 74 fe ff ff 4c 89 f7 e8   [93228.008667] ---[ end trace 11aef733e4977a50 ]---      Ubuntu 4.13.0-32.35-lowlatency 4.13.13      00:00.0 Host bridge [0600]: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub [8086:2a40] (rev 07)           Subsystem: Lenovo Mobile 4 Series Chipset Memory Controller Hub [17aa:20e0]           Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-           Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort-