2015-11-26 12:16 GMT+01:00 Maykel Franco maykeldebian@gmail.com:

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?

I have resolved it with this:

http://ubuntuforums.org/showthread.php?t=2284315&page=2

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I have posted the complete process that I followed to get it set up earlier on in this thread but I will post it again here for convenience. Here it is:

1. You HAVE to install ubuntu 15.04 64bit. Any other version simply does not work. 2. In the BIOS you have to disable the following: FastBoot, Intel Speedstep, SecureBoot 3. In the BIOS make sure that UEFI is enabled with CSM 4. When starting the Ubuntu installation you have to add the kernel option "libata.force=noncq". This is a MUST! 5. After the installation do a full update on Ubuntu. Then you can remove the kernel option "libata.force=noncq". Your SSD should perform faster now. But SpeedStep is still a problem. I have to keep it off. 6. I even re-enabled Fastboot and Secure in the BIOS and it still runs fine.

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It works!!!