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[BIOS/vBIOS - MODS] Prema Mod™ & Stock

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Hello all,

I have just purchased a Schencker XMG U505 (Clevo P75ZM) machine with an integrated Intel HD 4600 and dedicated NV 965M. Browsing through the BIOS settings I can see no method of turning off/disabling the NV card as I do not require this card at all and would prefer to run on the integrated Intel card. I am running on Debian using a 4.x.x kernel. It would seem the Intel card is turned off by the BIOS as lspci and lshw in Linux shows only the NV card ergo no trace of the Intel card. I also do not want to run the bumblebee hack as a workaround here.

Is there a (BIOS) mod for this or would anyone have an idea / any pointers.

Any pointers much appreciated.

Regards,

Propodopolus

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Hey together!

I have a P15xsm-a and just want to disable the integrated graphics card. Do I have to upgrade my BIOS to access these settings? I am a litte bit afraid to brick my laptop. Is it really true that there is no official source for Clevo BIOS updates?

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Added the Premo BIOS to my new Eurocom X8 based on the P377SM-A. I have to admit, my bum was twitching but the instructions were superbly clear. Thanks Prema. If I build up enough courage then I'll flash my Gcards

Is there a way to remove speedstepping to force a constant frequency on the 4940MX? Is it simply to disable speedstepping? :)

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Hello all,

I have just purchased a Schencker XMG U505 (Clevo P75ZM) machine with an integrated Intel HD 4600 and dedicated NV 965M. Browsing through the BIOS settings I can see no method of turning off/disabling the NV card as I do not require this card at all and would prefer to run on the integrated Intel card. I am running on Debian using a 4.x.x kernel. It would seem the Intel card is turned off by the BIOS as lspci and lshw in Linux shows only the NV card ergo no trace of the Intel card. I also do not want to run the bumblebee hack as a workaround here.

Is there a (BIOS) mod for this or would anyone have an idea / any pointers.

Any pointers much appreciated.

Regards,

Propodopolus

The iGPU is not connected or used at all on this model. This is a hardware not BIOS or OS limitation.

Hey together!

I have a P15xsm-a and just want to disable the integrated graphics card. Do I have to upgrade my BIOS to access these settings? I am a litte bit afraid to brick my laptop. Is it really true that there is no official source for Clevo BIOS updates?

On this model all video traffic is routed through the iGPU. If we would disable it there would be no picture at all even from the dGPU.

Added the Premo BIOS to my new Eurocom X8 based on the P377SM-A. I have to admit, my bum was twitching but the instructions were superbly clear. Thanks Prema. If I build up enough courage then I'll flash my Gcards

Is there a way to remove speedstepping to force a constant frequency on the 4940MX? Is it simply to disable speedstepping? :)

Not sure, you may want to ask someone with that type of system.

You may need to play with c-states as disabling speed step only disables the "Enhanced" part" and the card will still switch power states.

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Appreciate the prompt reply.

The Schencker XMG U505 (Clevo P75ZM) is configured with an i7-4790T CPU which has an integrated Intel HD 4600 onboard. Surely there must be some way to activate the Intel card?

Any pointers appreciated.

Regards,

Propodopolus

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emmm,Is that sma bios work well on sm series???

i have a P177sm with 970m but it is hard to install a nvidia driver on it

me : 9.0.31.1487

bios: 1.03.04pm v2

ec:1.03.01

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On this model all video traffic is routed through the iGPU. If we would disable it there would be no picture at all even from the dGPU.

Thanks for your answer ;)

But why is ALL traffic routed through the iGPU? Isn´t this slowing down everything? Is there any way to avoid using the iGPU as much as possible? Or would a custom BIOS from this thread help me in any way?

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Appreciate the prompt reply.

The Schencker XMG U505 (Clevo P75ZM) is configured with an i7-4790T CPU which has an integrated Intel HD 4600 onboard. Surely there must be some way to activate the Intel card?

Any pointers appreciated.

Regards,

Propodopolus

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Appreciate the prompt reply.

The Schencker XMG U505 (Clevo P75ZM) is configured with an i7-4790T CPU which has an integrated Intel HD 4600 onboard. Surely there must be some way to activate the Intel card?

Any pointers appreciated.

Regards,

Propodopolus

As I said, the iGPU hardware is not connected to anything.

emmm,Is that sma bios work well on sm series???

i have a P177sm with 970m but it is hard to install a nvidia driver on it

me : 9.0.31.1487

bios: 1.03.04pm v2

ec:1.03.01

No, it'll cause too many problems since they use a different Embedded Controller hardware among other hardware changes like Audio DSP...etc.

Thanks for your answer ;)

But why is ALL traffic routed through the iGPU? Isn´t this slowing down everything? Is there any way to avoid using the iGPU as much as possible? Or would a custom BIOS from this thread help me in any way?

Because it is that way on all Optimus systems which use a fully muxed hardware setup.

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Now I am confused. If you run doze, you can switch between the dedicated (NV) card and the integrated (Intel) card with my setup - XMG U505 / Clevo P75ZM. Why should it be any different in Linux?

Regards,

Propodopolus

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Now I am confused. If you run doze, you can switch between the dedicated (NV) card and the integrated (Intel) card with my setup - XMG U505 / Clevo P75ZM. Why should it be any different in Linux?

Regards,

Propodopolus

Whatever it is telling you its bogus...this system can not output through the iGPU only the NVIDIA card.

It simply has no Optimus:

http://www.clevo.com.tw/clevo_prodetail.asp?id=747&lang=en

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I will have to do more research. I would prefer to remove the NV card altogether. I must see what can be done in Linux.

Thanks for the help anyway.

Propodopolus

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I will have to do more research. I would prefer to remove the NV card altogether. I must see what can be done in Linux.

Thanks for the help anyway.

Propodopolus

You will need to purchase another model.

Service Manuals are available right here or on my blog which will show you in detail that video output is physically not connected from the iGPU...don't waste your time.

Switch the system with the poster above who wants only dGPU active. ;)

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Unfortunately i have to tell you: you did not inform yourself correctly before buying and you do not read what he is saying. :)

The iGPU does not work, Optimus is not possible in the P7xxZM. And its very good this way.

For Optimus support all the pictures have to go through the iGPU (i=integrated), even if the dGPU(d=dedicated) is used.

This is not the case within this laptop. Advantage: You can connect up to 3 additional displays.

*edit: 5 mins too late... :)

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In the P650SG/NP8652 Prema Mod BIOS is there a way to adjust CPU core and cache voltages? I'm looking for a way to undervolt both as my CPU is running very hot.

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In the P650SG/NP8652 Prema Mod BIOS is there a way to adjust CPU core and cache voltages? I'm looking for a way to undervolt both as my CPU is running very hot.

On P6 you will have to use Intel XTU for voltage adjustments, but using the Mod will give you more options in XTU to do so. ;)

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Added the Premo BIOS to my new Eurocom X8 based on the P377SM-A. I have to admit, my bum was twitching but the instructions were superbly clear. Thanks Prema. If I build up enough courage then I'll flash my Gcards

Is there a way to remove speedstepping to force a constant frequency on the 4940MX? Is it simply to disable speedstepping? :)

In a word. No.

More detailed answer - if you can get the heat under control, you can raise the TDP and current limits until they don't throttle anymore. Realistically, that's not possible without serious hard mods of the machine and liquid ultra. If you set your TDP to 90W and give it 150A, most 4940MX chips with do between 4.1GHz and 4.2GHz on stock voltage, however, they will run into the 90s and be at risk of throttling due to thermals at 95C. Liquid ultra can help but only so much and some loads will still blow past that 90W limit which will cause it to throttle and if you're going to raise the TDP that high, you might want to consider a second PSU and the converter box to run 660W to it, especially true if you plan to overclock the graphics card at all.

What I found is that setting my chip to 80W TDP and 4.1GHz with 150A current limit will result in me averaging 3.9GHz under heavy load (the stock behavior of my particular CPU is to fall down to 3.4Ghz with a heavy load) and between 4 and 4.1GHz with gaming. This required liquid ultra and resulted in average load temps of 89C.

Right now I'm just running it stock with an 85mv undervolt for 3.6GHz under load... Liquid ultra is a pain in the ass and not worth the risk to my machine. Basically, the 4940MX is a huge waste of cash in the SM-A. The only machine that seems to be able to handle them properly was the Alienware 18.

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In a word. No.

More detailed answer - if you can get the heat under control, you can raise the TDP and current limits until they don't throttle anymore. Realistically, that's not possible without serious hard mods of the machine and liquid ultra. If you set your TDP to 90W and give it 150A, most 4940MX chips with do between 4.1GHz and 4.2GHz on stock voltage, however, they will run into the 90s and be at risk of throttling due to thermals at 95C. Liquid ultra can help but only so much and some loads will still blow past that 90W limit which will cause it to throttle and if you're going to raise the TDP that high, you might want to consider a second PSU and the converter box to run 660W to it, especially true if you plan to overclock the graphics card at all.

What I found is that setting my chip to 80W TDP and 4.1GHz with 150A current limit will result in me averaging 3.9GHz under heavy load (the stock behavior of my particular CPU is to fall down to 3.4Ghz with a heavy load) and between 4 and 4.1GHz with gaming. This required liquid ultra and resulted in average load temps of 89C.

Right now I'm just running it stock with an 85mv undervolt for 3.6GHz under load... Liquid ultra is a pain in the ass and not worth the risk to my machine. Basically, the 4940MX is a huge waste of cash in the SM-A. The only machine that seems to be able to handle them properly was the Alienware 18.

Useful info, thanks :)

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On P6 you will have to use Intel XTU for voltage adjustments, but using the Mod will give you more options in XTU to do so. ;)

Thank you. Two additional q's:

1) is there a way to apply XTU settings on every boot automatically?

2) After vBIOS upgrade while using 3d apps the GPU fans will often get stuck at a low level and the GPU will overheat causing either a driver or an OS crash. Right after reboot when the GPU drivers finish loading the fans then kick into high gear. Any ideas on how to fix/prevent this?

Thanks!

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Thank you. Two additional q's:

1) is there a way to apply XTU settings on every boot automatically?

2) After vBIOS upgrade while using 3d apps the GPU fans will often get stuck at a low level and the GPU will overheat causing either a driver or an OS crash. Right after reboot when the GPU drivers finish loading the fans then kick into high gear. Any ideas on how to fix/prevent this?

Thanks!

1. XTU writes directly to the BIOS. The settings are written after the first full shutdown. If they are deemed stable they will stick during the next boot.

Once that is complete you can even uninstall XTU and they will remain in BIOS until a BIOS reset or load of defaults.

2. Use the BIOS Mod to set "Advanced" > "Switchable Graphics" > "PX 5.0 Mode" to "BACO" and the FANs will spin properly according to dGPU temperature even after it enters lowest power state.

(Also use ClevoHotKeyApp to set the system to "Entertainment" mode when full power is not needed in order to keep the system cooler)

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1. XTU writes directly to the BIOS. The settings are written after the first full shutdown. If they are deemed stable they will stick during the next boot.

Once that is complete you can even uninstall XTU and they will remain in BIOS until a BIOS reset or load of defaults.

OK, I must be doing something wrong:

  • I start CPU-Z it shows max multiplier at 36
  • I start XTU, CPU-Z now shows multiplier at 38 same as in XTU
  • I exit XTU. CPU-Z still shows 38
  • I do a full shutdown of the laptop
  • I turn the laptop on and start CPU-Z once it boots. CPU-Z still shows multiplier at 36 until I start XTU again.

2. Use the BIOS Mod to set "Advanced" > "Switchable Graphics" > "PX 5.0 Mode" to "BACO" and the FANs will spin properly according to dGPU temperature even after it enters lowest power state.

(Also use ClevoHotKeyApp to set the system to "Entertainment" mode when full power is not needed in order to keep the system cooler)

Unfortunately this did not work for me. I ran Firestrike benchmark after this BIOS change and it still crashed once GPU temp reached 96°C. GPU fans were on but stayed at low during the entire time.

Any ideas?

Thank you!

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OK, I must be doing something wrong:

  • I start CPU-Z it shows max multiplier at 36
  • I start XTU, CPU-Z now shows multiplier at 38 same as in XTU
  • I exit XTU. CPU-Z still shows 38
  • I do a full shutdown of the laptop
  • I turn the laptop on and start CPU-Z once it boots. CPU-Z still shows multiplier at 36 until I start XTU again.

Unfortunately this did not work for me. I ran Firestrike benchmark after this BIOS change and it still crashed once GPU temp reached 96°C. GPU fans were on but stayed at low during the entire time.

Any ideas?

Thank you!

1. You are not only starting XTU, but actually applying the setting, right?

Are you sure you are doing a full shutdown? Windows 8+ defaults to standby or deep sleep. You can change that in Windows Power Settings under the Advance tab. (You can set multiplier also directly in BIOS btw, no need for XTU for that)

2. I misunderstood your problem...that sounds like Clevo HotKeyApp preventing the FANs from working. Uninstall it, reboot and see if they spin properly.

Then install it fresh without using custom FAN profiles.

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1. You are not only starting XTU, but actually applying the setting, right?

Are you sure you are doing a full shutdown? Windows 8+ defaults to standby or deep sleep. You can change that in Windows Power Settings under the Advance tab. (You can set multiplier also directly in BIOS btw, no need for XTU for that)

I'm using windows 7 and I tried both - start menu shutdown and command line "shutdown -s -t 0" If I do the multiplier directly in BIOS then yes it does work, however I also undervolt the CPU (by -75mV) in XTU and there are no settings for that in the BIOS so I would prefer that XTU settings would persist. :)

2. I misunderstood your problem...that sounds like Clevo HotKeyApp preventing the FANs from working. Uninstall it, reboot and see if they spin properly.

Then install it fresh without using custom FAN profiles.

Uninstalling HotKey fixed the issue. Thank you!

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More info: So anything I can directly set in PremaMod BIOS does persist across reboots. But the outlined settings in yellow have to be applied on every boot since I cannot set them in BIOS.

post-35238-1449499983753_thumb.jpg

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Looks like you only hit "apply" but not "save"...

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