From ionic@ionic.de Sun Sep 3 08:30:45 2017 Received: (at 1201) by bugs.x2go.org; 3 Sep 2017 06:30:54 +0000 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on ymir.das-netzwerkteam.de X-Spam-Level: X-Spam-Status: No, score=-2.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,SPF_HELO_PASS autolearn=ham autolearn_force=no version=3.4.1 Received: from localhost (localhost [127.0.0.1]) by ymir.das-netzwerkteam.de (Postfix) with ESMTP id B477F5DACF for <1201@bugs.x2go.org>; Sun, 3 Sep 2017 08:30:45 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at ymir.das-netzwerkteam.de Received: from ymir.das-netzwerkteam.de ([127.0.0.1]) by localhost (ymir.das-netzwerkteam.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Mi43hEb4Dawc for <1201@bugs.x2go.org>; Sun, 3 Sep 2017 08:30:21 +0200 (CEST) Received: from Root24.de (powered.by.root24.eu [5.135.3.88]) by ymir.das-netzwerkteam.de (Postfix) with ESMTP id DDFF55DACB for <1201@bugs.x2go.org>; Sun, 3 Sep 2017 08:30:19 +0200 (CEST) Received: from [10.20.16.17] (178.162.222.163.adsl.inet-telecom.org [178.162.222.163]) by mail.ionic.de (Postfix) with ESMTPSA id ACE2F4F00657; Sun, 3 Sep 2017 08:30:11 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=ionic.de; s=default; t=1504420211; bh=g7Nnb48FAdjmPSFCfeGyW2NhLn8zELjtlvfPDpgqVfE=; h=Subject:To:References:From:Date:In-Reply-To:From; b=Z0WkdCY1jrmNniglrFwAfoPsf7ukOXXMSU2HPq117vjxEDjkMyUKqpMiOFh64up00 bTf9nCEaNrvzShLLEiiD6cRhbuI0c1OevlKx6mEWocJfd0X1VQaqCYIpp48u6B0LgZ HJUPadkZAGEGGSzM4StZro/Q+gXzvkySgcs06v04= Subject: Re: Black window with KDE5 plasma To: Klaus Fuerstberger , 1201@bugs.x2go.org References: <730dff47-1a1b-a7a0-3f05-ebd2905ac555@arcor.de> <1a3dea91-6f46-091c-52df-80277c28dde2@arcor.de> <9376ae1f-5ea3-0c0d-f3ce-969dc2036276@ionic.de> <573978bc-4d55-ff42-4a8c-8276f037d616@arcor.de> From: Mihai Moldovan Message-ID: Date: Sun, 3 Sep 2017 08:30:07 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.1.1 MIME-Version: 1.0 In-Reply-To: <573978bc-4d55-ff42-4a8c-8276f037d616@arcor.de> Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="wUuWt2oMgRBR1TiWikwNPsTgiSdPdwqkF" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --wUuWt2oMgRBR1TiWikwNPsTgiSdPdwqkF Content-Type: multipart/mixed; boundary="2xNoXvDtLtO2i0kobMIHrR4kdwVePtJGn"; protected-headers="v1" From: Mihai Moldovan To: Klaus Fuerstberger , 1201@bugs.x2go.org Message-ID: Subject: Re: Black window with KDE5 plasma References: <730dff47-1a1b-a7a0-3f05-ebd2905ac555@arcor.de> <1a3dea91-6f46-091c-52df-80277c28dde2@arcor.de> <9376ae1f-5ea3-0c0d-f3ce-969dc2036276@ionic.de> <573978bc-4d55-ff42-4a8c-8276f037d616@arcor.de> In-Reply-To: <573978bc-4d55-ff42-4a8c-8276f037d616@arcor.de> --2xNoXvDtLtO2i0kobMIHrR4kdwVePtJGn Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 09/01/2017 12:42 PM, Klaus Fuerstberger wrote: > The nvidia driver installer removes the conflicting mesa drivers and > especially /usr/lib/x86_64-linux-gnu/libGL.so.1.2.0 >=20 > If I backup this library bevor installing the nvidia driver and change > one symbolic link pointing to the systems library then x2go works fine.= Are you really using the nVidia installer package? You shouldn't do that.= Instead, use the packages your distribution provides. They do things diff= erently and more importantly correct from a distribution viewpoint. For instance, they won't be removing MESA's libGL version. Debian (and probably thus also Ubuntu) uses its alternatives system to se= lect the libraries provided by different implementations, one of which is nVid= ia. I don't know how it's done on other systems, but they probably do somethi= ng like that as well. > Of course this workaround does not function, when started with the x2go= > Xsession, because the user has no write permissions in > /usr/lib/x86_64-linux-gnu. >=20 > I wonder why x2go worked bevor with KDE4 and the nvidia drivers. No idea, but software changes. Maybe nVidia's libGL was just compatible e= nough to work previously, but now isn't. In any case, we never intended to use anything but MESA's libGL. Just today I've had a report of a user that all Qt5-based applications di= dn't work any longer on his system (Debian Buster). Turned out that the nvidia= drivers were installed and that this was the culprit. When we switched to MESA's implementation via sudo update-alternatives --= set glx /usr/lib/mesa-diverted, things started to work again. Sadly, while this might fix X2Go sessions, it's not a viable option for u= sers who also want to use their machines directly. Also, sadly, I didn't yet come up with any means of overriding libGL and whatever other library is being switched from X2Go Server's scripts. I'd = like to just always force the MESA libraries for X2Go sessions only, but this stu= ff is rooted deep into the system. Mihai --2xNoXvDtLtO2i0kobMIHrR4kdwVePtJGn-- --wUuWt2oMgRBR1TiWikwNPsTgiSdPdwqkF Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIzBAEBCgAdFiEEbhHQj3UzgcdE8cg8H9Yu2W4lOocFAlmroW8ACgkQH9Yu2W4l OoecCBAAh3jhRn0I17+InZZlYcxwFzz1I6JQgbvLm/OtASrBFZZUs0aDzOl7eBcD 3EtXlHGZYXYWmHFFfhzs0RUAcX5kHFbOixAre4uS4U3Zozy4BXLcDk8b8fmDEHjB i7LterAqRl6cgL0QW+OJgINM+E3dJyPchQtJOwdbNRAfIP6J+tWz7bI6RY1V5dd/ 8Hgp7CSXlQMGOwW8pE3DtShaj859K6MQ79Q5grNt1qnN9wYJFPlwZQ3NkmHzfoT6 Ni+fiSIwE3wWWr95FCtzaPLRARiMTKiyWZv6T9zzlsRf6B0iPxQmFLaBCZMqINhW 6EsHkc9MQAtKUmdvAuf7sAOSnxWgJ1asn9/E16OA6oC6YrxGvjsl5HpiJ9BNsqz1 Gty+CmIhJRRxNnAbBsGtTMGOOYwltU/3JQVUpzENJ8Ic02MICs/cX9FKwRVqFryZ P55TBW82andBTWSGnYhp4/UFiHz6ZY/kskpAPBs2qvcv+/OUA2RwiUj8+XVTaHmG QtsUGDmZGexO/aJkhuumZt4UwJsP/ZGc0xwceDv3HQIzSki3QH/m3VBWGA9jKTim eiq8OjjtJysN+RSswRUjMfcNirZttLhFPc2yVdi5vYOoTmxvJFyXQ2Zg1kFhO0nC QoiC+fkSboOJ14UQZk28CJBIqfnRM9KV3yWLtwsMuMbTI1is7uI= =J0jP -----END PGP SIGNATURE----- --wUuWt2oMgRBR1TiWikwNPsTgiSdPdwqkF--