[REQUEST] Dell Inspiron 15R SE 7520 BIOS Unlock

[tarzan]

inspiron 15r se 7520 is "px 5.0 muxless" design. intel hd graphics 4000 igpu can not disable. alwayst firts gpu must be hd 4000

but there is another problem. motherboard intel hm 77 its capable pci express 3.0. gpu is radeon 7730m ( its cape verde gpu... downclocked to 575 mhz radeon 7750 desktop gpu with ddr3 memory ). cape verde is pci express 3.0 supporting.

but gpu running on pci express 2.0 x8..... its bad because its muxless design transferring all picture data over pci express. im tested pci express-cpu bandwith its maximum 3.5 gb/s.

im used hwinfo64. its showing my gpu connected to pci express 3.0 x8 slot but running on 2.0 x8 mode.

im triyed radeon ForcePcieLinkSpeed regedit setting.

1 working ( down to pci express 1.1 )
2 working ( default 2.0 no difference )
3 not working ( its pci express 3 )

im thinking pci express disabled from bios for old times gpu bsods. but now also fixed drivers ready for gpu.

and a02 old and problem bios
last one is a10
http://ftp.dell.com/FOLDER01496778M/1/7520A10.exe

[felipejfc]

So? You want it modded?
It was already done here http://www.bios-mods.com/forum/Thread-Re...1#pid66901
but do not touch fan settings as it bricked the guys laptop, and do not disable IGD as it will result in brick too

[tarzan]

i was wrong

inspiron 7520 have radeon 7730m dgpu. its pci express 2.1 device.

but its pci express lane x8. it can be set 16x from unlocked bios.

---

So? You want it modded?
It was already done here http://www.bios-mods.com/forum/Thread-Re...1#pid66901
but do not touch fan settings as it bricked the guys laptop, and do not disable IGD as it will result in brick too

thanks to who modded this bios. dell support very weak for this model.

disable igd impossible. lots of people not need fan setting.

is there pci express x16 setting for pci express graphics slot ???
and link not work for me ( https://hostr.co/xwLVkNzgkIAr working )
can i back original bios after used this ??

[felipejfc]

sure you can

[tarzan]

im testing bios.
not touched graphic card output its "sg" ( switchable )

cant found pci lane option for x16.
tried lots of setting in "pci express graphics port" menu . and there is interresting option
"muxless fixed, muxless fixed and dynamic, muxed dynamic, dull dgpu of dynamic, full dgpu off and dynmic"
im trying it. its doing single card over muxless. i selected it on windows but not work now. im selected one time fixed mod from catalyst control center but not working. im trying it with windows update drivers.
activated dgpu aspm.

[felipejfc]

be careful with this settings, changing the wrong one can brick your PC, but I'ld like to know the results of your experiment! aspm is working fine?

[tarzan]

be careful with this settings, changing the wrong one can brick your PC, but I'ld like to know the results of your experiment! aspm is working fine?

im not tried benchmark. but windows started without problem. and hwinfo dgpu pciexpress aspm activated.

im having realtek ethernet issues. when system rebooted sometimes it no take ip ( i tried all ) when enable disable its fixing. im disabled its aspm result now good.

im disabled its aspm. and trying.
im not touch switchable graphics root. not touching igpu.

[felipejfc]

I touched Video settings in my Dell, results of the experiment are:

Disable PEG = Good
Disable IGD and set PEG primary = BRICK
Disable PEG and leave only IGD = GOOD

cannot disable IGD without brick :/

[tarzan]

I touched Video settings in my Dell, results of the experiment are:

Disable PEG = Good
Disable IGD and set PEG primary = BRICK
Disable PEG and leave only IGD = GOOD

cannot disable IGD without brick :/

only igd direct connecting laptop screen or hdmi output. if someone disable igd or trying changing with dgpu(peg) no device can cannot laptop screen or hdmi.

but there is settings like "fixed muxless dgpu".

im selected "fixed muxless and dynamic scheme" and i see select your graphic adapter option in catalyst. but when i tried this radeon gpu working but catalyst driver not activate normaly.

muxless dynamic option totaly compatible with new catalyst 14.1 and 14.2
its effect like disabling ulps from regedit.

[felipejfc]

So you are trying to make Radeon your first display?

where are you from?