cr0t3x

@J95 I tried my brother's Asus VG248QE today (another 144Hz monitor) and it worked like a charm with the newest nVidia drivers. I think it's confirmed now that the BenQ XL series just doesn't work well with mobile nVidia drivers. I posted on the GeForce forums, but not sure if anything will come of it.

I am typing away on 120hz on my Alienware 18 at last. I am back on the original vBIOS to rule that out, but I will flash the unlocked vBIOS again soon (since it seems pretty clear this issue was unrelated to that.) Since this worked, I wonder if I will be losing out on performance benefits on the later drivers (314.22 came out a few months before the 780m was released.) This is a good interim solution for me, but in your opinion, what's the long term play here? It seems like these BenQ monitors (XL2420Z) might just have weird compatibility issues with mobile nVidia cards. BTW, is it worth seeing if using the dual DVI port of the monitor changes anything? I was going to buy a dual DVI to mini-DP active adapter. tl;dr: You're a man of legend.

Neither 337.88 nor 327.23 worked for my 680m setup (see screenshots.) With v337.88, 327.33 (and almost all other drivers I have tried): https://www.dropbox.com/s/ovzeqieaj3tfqha/Screenshot%202014-08-02%2004.36.19.png With 314.22 (the only driver that works with my 680m setup): https://www.dropbox.com/s/orqu5vw40o1ycxf/Screenshot%202014-08-02%2004.47.50.png As I mentioned in my earlier thread, I don't have any solutions for my 780m setup-- no drivers I have tried so far have worked with it. If I mod the 314.22 INF file, would it work with the 780m (driver was released before 780m was out)? Maybe I could try that as an interim solution.

Thanks for the suggestion-- I will try it out now and edit this post to report back (installing 337.88 on my 680m setup.) To clarify, how come this issue only affects some 120hz+ users but not others? If this is a corrupted driver issue, shouldn't everyone with 120hz+ monitors be complaining?

Hi guys, been a lurker here for a while. I have a M18xR2 (680m SLI) and the Alienware 18 (780m SLI). I flashed using the vbios mods for both the 680m and 780m and have noticed the same issue on both laptops: resolution/refresh rate combinations disappear and cannot be utilized. [See screenshot: imgur: the simple image sharer] I have a 144hz monitor (BenQ XL2420Z) and I have it connected via the mini-DP port in both laptops. When everything works properly, I can use any res on the monitor at any of it's refresh rates (144, 120, or 100Hz.) I am not exactly sure if this problem would have occurred even without flashing the BIOS, but I can only use very specific drivers for the 680m setup now (314.22)-- most others (even with the modded INF) causes resolutions to be missing and refresh rate issues. I cannot add the missing resolutions/refresh rates via the custom option in the drivers either-- it's almost like they dont exist. Same thing happens with the 780m setup, except I can't find ANY drivers that work properly. Another quirk is that the list of resolutions/refresh rates available change randomly with restarts, closing the laptop lid, re-plugging in the mini-DP cable, etc. In other words, something is clearly not compatible but I can't figure out what. Steps taken: As I mentioned, I already tried modding the INF files. Is there somewhere I can find the original vBios for both the 680m and 780m that comes with the Alienware laptops? [Edit: looks like Video Bios Collection | techPowerUp could be a resource.] I had backed up my original bios for the 780m and actually flashed back to it-- same issues occurred. Note: clock settings stayed overclocked after I flashed back-- is this normal? The splash screen when you boot up is now gone though. I have also ordered another DP to mini-DP cable, as well as a Dual DVI to mini-DP adapter which I will try, in case it is a cable issue (but it wouldn't make sense why the resolutions appear properly for any drivers then.) Any help would be appreciated! Since this same issue has occurred in two different systems with different cards (680m and 780m), I am going to brainstorm out loud: I have used 2 or 3 different 120/144Hz BenQ monitors that have all caused this issue at various different times issues occurred on different laptops with different cards both cards were flashed at some point the only connection between the two system then are: cards in both systems were flashed at some point, only BenQ monitors, and 2 different displayport to mini-DP cables were used. My conclusion is that there is either some weird compatibility between 120/144Hz BenQ monitors and nVidia cards (likely), or that there is something wrong with my monitor / cable (unlikely.) Do you guys have any other suggestions? Thanks in advance!