Hi, I have a kernel 4.2.5-1-ARCH and I have the problem...In dmesg: nov 25 20:10:27 cherraez kernel: WARNING: CPU: 3 PID: 0 at drivers/gpu/drm/i915/intel_uncore.c:620 hsw_unclaimed_reg_debug+0x6d/0x90 [i915]() nov 25 20:10:27 cherraez kernel: Unclaimed register detected before reading register 0x223a0 nov 25 20:10:27 cherraez kernel: Modules linked in: snd_hda_codec_hdmi joydev mousedev rtsx_usb_ms rtsx_usb_sdmmc memstick hid_generic rtsx_usb arc4 x86_pkg_temp_thermal coretemp iTCO_wdt msi_wmi usbhid iTCO_ve nov 25 20:10:27 cherraez kernel: hid soundcore btusb snd_soc_sst_acpi btrtl btbcm video btintel i2c_designware_platform bluetooth gpio_lynxpoint 8250_dw i2c_designware_core spi_pxa2xx_platform acpi_als kfifo_b nov 25 20:10:27 cherraez kernel: CPU: 3 PID: 0 Comm: swapper/3 Not tainted 4.2.5-1-ARCH #1 nov 25 20:10:27 cherraez kernel: Hardware name: Micro-Star International Co., Ltd. GE62 2QD/MS-16J2, BIOS E16J2IMS.113 07/17/2015 nov 25 20:10:27 cherraez kernel: 0000000000000000 62d0bb3ca29d2511 ffff88045ecc3c88 ffffffff81570d0a nov 25 20:10:27 cherraez kernel: 0000000000000000 ffff88045ecc3ce0 ffff88045ecc3cc8 ffffffff810748a6 nov 25 20:10:27 cherraez kernel: 0000000000000001 ffff880446330000 00000000000223a0 ffff880446334398 I have the module i915. I probed this in the grub /etc/default/grub GRUB_CMDLINE_LINUX="i915.powersave=0" And: grub-mkconfig -o /boot/EFI/grub/grub.cfg But the kernel panic persist... Can I help me please? Kernel 4.2.5-1-ARCH. I think solved in the kernel 4.3-rc ... Could try install linux-git?