G752VY issue with M.2 speed after resume from sleep

[hexaae]

I am running BIOS 211

Wasn't available 'till this morning in the public download area: https://www.asus.com/ROG-Republic-Of...Desk_Download/

Just installed, and still the same bug: halved transfer rate on resume after sleep only (Hybernation or reboot will restore correct speed)


G752VY-T7004T
Driver: Intel Chipset SATA RAID Controller (= Intel RST drivers) 14.6.3.1032 by Intel Corporation.
Drive Model: NVMe SAMSUNG MZVPV256, Drive Revision: BXW7
BIOS 211

EDIT:
just checked and now I have the RAID/AHCI option in the new BIOS, will try switching to AHCI modifying first those Windows registry keys (and creating a Restore Point)...

[hexaae]

This is on Which Bios? Raid mode right? not AHCI?
I'm on AHCI, and seems to be ok.

Resume from Sleep mode?
Please can you post your infos?

Driver: Intel Chipset SATA RAID Controller ??? by Intel Corporation.
Drive Model: NVMe ???, Drive Revision: ???
BIOS ???
Secure boot: ON?

[Gustave]

I downloaded the G752VYAS_211 BIOS file the 8th of March. I thought it to be peculiar that the file was available on some Asus download sites and not on others.

[hexaae]

yes, mine is on raid mode. when i try to switch to achi, i get a blue scree.

Same problem here: can't switch to AHCI, even after being sure my registry was OK with

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Servic es\msahci "Start" value set to 0
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Servic es\iastorV "Start" value set to 0
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Servic es\atapi "Start" value set to 0

and changing BIOS 211 from RAID to AHCI I have blue screen INACCESSIBLE_BOOT_DEVICE.
BTW, it was already set to 0 for all keys in the registry.
(Ignore the driver name "Windows 7", I have of course Windows 10 x64 installed)



I wonder if I should try AHCI from BIOS + msahi "Start" = 1.... mh...

[purekaoz777]

I also too noticed my Samsung NVMe SM951s speed is reeduced after I sleep the computer. I am running BIOS 211 with latest Intel chipset driver 14.8.0.1042. Hopefully this issue will be addressed soon.

[hexaae]

I also too noticed my Samsung NVMe SM951s speed is reeduced after I sleep the computer. I am running BIOS 211 with latest Intel chipset driver 14.8.0.1042. Hopefully this issue will be addressed soon.

Probably we have to wait for a BIOS (currently 211) or Intel RST driver update.

TEMP. WORKAROUND to restore full speed:
when it gets slow after sleep, put laptop in Hibernation and resume to keep your work... or reboot.

[hexaae]

SOLVED!

I can confirm that switching to AHCI will cure this issue with halved M.2 transfer rate after resume from sleep!
Config:
BIOS 212, driver: Intel(R) 100 Series/C230 Chipset Family SATA AHCI Controller 14.8.0.1042
Boot drive: NVMe SAMSUNG MZV PV256 (was originally set to RAID), second drive: Samsung SSD 850 EVO 1TB
AHCI mode BEFORE sleep and AFTER sleep resume:


(ATTO download from Softpedia)

How to switch from RAID to AHCI the simplest way? Here is it, tested and worked fine for me:
http://www.tenforums.com/drivers-har...tml#post332243

No need to edit registry.

1. Run Command Prompt as Admin
2. Invoke a Safe Mode boot with the command: bcdedit /set {current} safeboot minimal
3. Restart the PC and enter your BIOS during bootup with F2 (...note by Hexaae).
4. Change from RAID (...note by Hexaae) to AHCI mode then Save & Exit.
5. Windows 10 will launch in Safe Mode.
6. Right click the Windows icon (or use WIN+X ...note by Hexaae) and select to run the Command Prompt in Admin mode from among the various options.
7. Cancel Safe Mode booting with the command: bcdedit /deletevalue {current} safeboot
8. Restart your PC once more and this time it will boot up normally but with AHCI mode activated.