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@asakurahao I have similar warnings but they shouldn't block xleap from running:

$ xleap
-I: Adding /opt/amber/dat/leap/prep to search path.
-I: Adding /opt/amber/dat/leap/lib to search path.
-I: Adding /opt/amber/dat/leap/parm to search path.
-I: Adding /opt/amber/dat/leap/cmd to search path.
Warning: Cannot convert string "-*-helvetica-medium-r-*-*-18-*-*-*-*-*-*-*" to type FontStruct
Warning: Cannot convert string "-*-helvetica-bold-r-*-14-*" to type FontStruct
Warning: Cannot convert string "-*-helvetica-medium-o-*-*-14-*-*-*-*-*-*-*" to type FontStruct
Warning: Cannot convert string "-*-courier-bold-r-*-*-14-*-*-*-*-*-*-*" to type FontStruct
Warning: Cannot convert string "-*-helvetica-medium-o-*-*-18-*-*-*-*-*-*-*" to type FontStruct
Warning: Cannot convert string "-*-courier-medium-r-*-*-14-*-*-*-*-*-*-*" to type FontStruct

To avoid these messages you can try to install one of the Xorg fonts

@dviktor Thanks, it works now!

@asakurahao it seems like AMBER developers haven't published support patch. I've added one so re-download package and try again

@dviktor, It is working now, Thanks.

Now, I'm having problems with version of CUDA. "CUDA version 11.1 detected Error: Unsupported CUDA version. AMBER requires CUDA version >= 7.5 and <= 10.2."

How can I disable it or correct this problem?

@asakurahao Yes, AMBER developers require that you download sources from their website. Then you should place them in the same directory where your downloaded PKGBUILD resides. After that just run makepkg

Dear,

When I try to install, the message is shown: Building ambertools... ==> Making package: ambertools 20-5 (Sat 14 Nov 2020 03:55:49 PM -03) ==> Checking runtime dependencies... ==> Checking buildtime dependencies... ==> Retrieving sources... ==> ERROR: AmberTools20.tar.bz2 was not found in the build directory and is not a URL. Failed to build ambertools

Looking in the source files, there is a "local://AmberTools20.tar.bz2". Should I download the software? If yes, where should I put it?

@Gusten should be fixed now

It appears that the md5sums for amber.sh and 19 need to be updated.