users July 2016

users@lists.fedoraproject.org

133 participants
133 discussions

nc missing option -z
by Suvayu Ali 03 Nov '16

03 Nov '16

Hi, I used to use netcat to check if a particular host is up or if I have internet connection before I run a few scripts. I would use the -z option in particular. But now I see that has been removed: $ nc -z imap.gmail.com 993 && sync-my-email.sh ncat: invalid option -- 'z' Here is the excerpt from the old manual page: -z Specifies that nc should just scan for listening daemons, without sending any data to them. It is an error to use this option in conjunction with the -l option. Any ideas what happened to it? What can I use as replacement? Thanks for any ideas. -- Suvayu Open source is the future. It sets us free.

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compile XV?
by dirt bag 01 Nov '16

01 Nov '16

I know its not been updated in years, but this is still a must have for me. I just upgraded to fedora 24 (64bit) and Im trying to compile it from source because the rpms Ive found are either broke or dont work right. Im following these instructions.. wget ftp://ftp.cis.upenn.edu/pub/xv/xv-3.10a.tar.gz wget http://prdownloads.sourceforge.net/png-mng/xv-3.10a-jumbo-patches-20050501.… wget http://www.ulich.org/hints/resources/xv-3.10a-jumbo20050501-1.diff.gz tar xvzf xv-3.10a.tar.gz tar xvzf xv-3.10a-jumbo-patches-20050501.tar.gz gzip -d xv-3.10a-jumbo20050501-1.diff.gz cd xv-3.10a patch -p1 < ../xv-3.10a-jumbo-fix-patch-20050410.txt patch -p1 < ../xv-3.10a-jumbo-enh-patch-20050501.txt patch -p1 < ../xv-3.10a-jumbo20050501-1.diff make and Ive gotten as far as ... [jason@badman xv-3.10a]$ make gcc -O3 -Wall -DDOPNG -I/usr/include -I/usr/include -DDOJPEG -I/usr/include -DDOTIFF -DUSE_TILED_TIFF_BOTLEFT_FIX -I/usr/include -DDOPDS -DUSLEEP -DLINUX -L/usr/X11R6/lib -DMGCSFXDIR=\"/usr/X11R6//lib/\" -DSYSCONFDIR=\"/etc\" -DXVEXECPATH=\"/usr/X11R6//lib/\" -c xvpng.c xvpng.c: In function ‘CreatePNGW’: xvpng.c:97:56: error: ‘Z_NO_COMPRESSION’ undeclared (first use in this function) DCreate(&cDial, pngW, 12, 25, DWIDE, DHIGH, (double)Z_NO_COMPRESSION, ^~~~~~~~~~~~~~~~ xvpng.c:97:56: note: each undeclared identifier is reported only once for each function it appears in xvpng.c:98:19: error: ‘Z_BEST_COMPRESSION’ undeclared (first use in this function) (double)Z_BEST_COMPRESSION, COMPRESSION, 1.0, 3.0, ^~~~~~~~~~~~~~~~~~ In file included from /usr/include/pngconf.h:50:0, from /usr/include/png.h:371, from xvpng.c:31: xvpng.c: In function ‘WritePNG’: xvpng.c:427:21: error: dereferencing pointer to incomplete type ‘png_struct {aka struct png_struct_def}’ if (setjmp(png_ptr->jmpbuf)) { ^ xvpng.c:453:11: error: dereferencing pointer to incomplete type ‘png_info {aka struct png_info_def}’ info_ptr->width = w; ^~ xvpng.c: In function ‘png_xv_error’: xvpng.c:1054:18: error: dereferencing pointer to incomplete type ‘png_struct {aka struct png_struct_def}’ longjmp(png_ptr->jmpbuf, 1); ^~ xvpng.c: In function ‘VersionInfoPNG’: xvpng.c:1078:5: error: ‘ZLIB_VERSION’ undeclared (first use in this function) ZLIB_VERSION, zlib_version); ^~~~~~~~~~~~ xvpng.c:1078:19: error: ‘zlib_version’ undeclared (first use in this function) ZLIB_VERSION, zlib_version); ^~~~~~~~~~~~ Makefile:319: recipe for target 'xvpng.o' failed make: *** [xvpng.o] Error 1 [jason@badman xv-3.10a]$ I have all the zlibs I can find installed.. [jason@badman xv-3.10a]$ rpm -qa | grep zlib zlib-1.2.8-10.fc24.i686 zlib-devel-1.2.8-10.fc24.x86_64 zlib-1.2.8-10.fc24.x86_64 any ideas? -db

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Alternatives to Theme Font size changer Firefox plugin?
by Sam Varshavchik 28 Oct '16

28 Oct '16

The popular theme font size changer Firefox plugin, https://addons.mozilla.org/en-US/firefox/addon/theme-font-size-changer/, no longer supports Linux. The default Firefox font size is too small for people with poor eyesight. As far as I can tell, the only thing that official "Firefox themes" do is set a background image for the UI. As Benny Hill would say, biiiiiiiiiiiiig …deal. The top-ranked comment on that extension page suggests hacking "userChrome- example.css" in ~/.mozilla/firefox. $ find ~/.mozilla/firefox -name userChrome-example.css -print $ There goes that idea. Googling around the only other suggestion I found was to hack layout.css.devPixelsPerPx setting in about:config. All that did, apparently, was making the Firefox UI elements themselves bigger, but their font size – the menu and the URL bar – remained exactly the same. Anyone has other suggestions?

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Taskbar Panel in Plasma Won't Autohide
by Stephen Morris 10 Oct '16

10 Oct '16

Hi, I am trying to get the Taskbar Panel to autohide, but when I click on the options button in the panel, the left, right and center options are permanently highlighted but seem to function in terms of moving the indicator that reflects which option is active. Also the 'Always Visible', 'Auto Hide', 'Windows can Cover' and 'Windows go Below' options are also permanently highlighted but selecting the 2nd or 3rd option does nothing. It appears these options are highlighted because the colour scheme I am using, which is forget-me-not thinks they are push buttons. Does anyone know why these don't work anymore in Fedora 23? I am using Breeze for the Windows Style and Windows Decorations themes. regards, Steve

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bad results from adding samsung v-nand SSD 950 PRO M.2 to ASUS laptop
by Robert P. J. Day 16 Aug '16

16 Aug '16

yesterday, i popped open my ASUS G752VL-DH71 to see two available slots for SSD drives, both clearly labelled "PCIE only", so i inserted a new samsung 950 PRO in slot 1, closed it up and booted and (reproducing from scribbling on some paper, just the first bit): ata1.00: failed to enable AA (error_mask=0x4) ata1.00: revalidation failed etc, etc, at which point it finally dropped me into an emergency shell. i didn't have time to debug so i just removed it and got back to work, but is there something i'm forgetting here? here's the samsung page for that drive: http://www.samsung.com/semiconductor/minisite/ssd/product/consumer/950pro.h… thoughts? like i said, i did not invest a lot of time trying to track this down as i have way too much to do, but if there's something stupid i've done, it would be good to know. rday -- ======================================================================== Robert P. J. Day Ottawa, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ========================================================================

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Fedora 24 and PNY SSD Problems
by Gregory P. Ennis 06 Aug '16

06 Aug '16

Everyone, I am trying to reclaim some use out of a couple old Compaq Presaio SR1720NX machines for the office by adding some memory and a PNY 240 GB CS1311 SSD drives. The bios was made by Phoenix; I did not identify a version number of the bios. I did not plan on keep the hard drive installed and planned on just using the SSD. These machines were IDE machines and only had two SATA ports on the motherboard. When I install the SSD the bios recognizes the Pny SSD properly, and I was able to set up the boot order without difficulty. When I tried to install Fedora 24 on the first machine the installation software did not identify the presences of the SSD. I also tried a Centso 7.2 install disc and the SSD was not recognized with it as well. Just to make sure things were working, I added the hard drive back to the machine, and the Fedora install routines did recognize the hard drive but continued to fail to recognize the SSD. Are there preparatory things that I need to do with the SSD drives that I am missing? Any help would be appreciated. Thanks, Greg Ennis

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Re: application to listen to on-line broadcasts? [SOLVED]
by William Mattison 05 Aug '16

05 Aug '16

Good morning, I'm now thinking that for the long term, I'm probably better off waiting for chromium to become available in Fedora. A concern is that wikipedia implies that code for flash-like functionality is not included in chromium. So for the short term, I'm back to flash. I am almost certain that 2-3 years ago, I installed flash from the adobe web site. But it never worked. A short while ago, I tried "dnf info flash" to see if I have it, and if so, what version. I must be mis-understanding the dnf man page. I got this: bash.2[~]: dnf info flash Fedora 23 - x86_64 3.5 MB/s | 43 MB 00:12 RPM Fusion for Fedora 23 - Free 511 kB/s | 457 kB 00:00 RPM Fusion for Fedora 23 - Nonfree - Updates 207 kB/s | 54 kB 00:00 RPM Fusion for Fedora 23 - Free - Updates 350 kB/s | 160 kB 00:00 RPM Fusion for Fedora 23 - Nonfree 336 kB/s | 156 kB 00:00 Fedora 23 - x86_64 - Updates 7.6 MB/s | 24 MB 00:03 Last metadata expiration check: 0:00:07 ago on Wed Jul 27 09:31:01 2016. Error: No matching Packages to list bash.3[~]: First, how do I determine whether or not I already have flash, and if so, which version? Second, If I don't already have flash, what's the best way to get the right flash? And then what do I need to do so Firefox launches it when, for example, I want to see a flash video in the yahoo finance web site? (and then there's those National Weather Service RADAR loops!) Third, what did "dnf info flash" actually do? Do I now have a bunch of files that I should delete? If yes, where are they? Thank-you for your help. Bill. (p.s. This is one of those rare cases where I wish I could change the title or topic of this thread!)

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old packages
by Patrick Dupre 03 Aug '16

03 Aug '16

Hello, I do have a bunch of old pacakges installed. Is there any update of ? smart system-config-lvm perl-define system-config-boot perl-Forest perl-Sort-Fields SOAPpy celt systemd-ui anaconda-yum-plugins createrepo aic94xx-firmware system-config-firewall Should I just remove them ? Thank =========================================================================== Patrick DUPRÉ | | email: pdupre(a)gmx.com Laboratoire de Physico-Chimie de l'Atmosphère | | Université du Littoral-Côte d'Opale | | Tel. (33)-(0)3 28 23 76 12 | | Fax: 03 28 65 82 44 189A, avenue Maurice Schumann | | 59140 Dunkerque, France ===========================================================================

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gcc 4.9
by Amadeus W.M. 03 Aug '16

03 Aug '16

I want to do some parallel programming on my nvidia GPU, and for that I need cuda. The latest is cuda 7.5 and that requires gcc 4.9. I installed cuda on my machine, but little did I know that fedora 24, which I recently installed, came with gcc 6.1. I wasn't able to compile any of the cuda examples. I asked on the nvidia forums about this and the next cuda (version 8.0) will require gcc-5.3 or so. No indication when cuda will work with gcc-6.1. So what do I do now? From some posts I read it appears that debian provides a gcc49 package, and so I hoped fedora would provide one too, but no such luck. Can I rebuild the gcc-4.9 rpm on F24 without messing up the stock gcc-6.1? Or, can I convert the gcc49.deb package into the equivalent rpm? I can try these things and try to be careful not to mess up, but I was wondering if anyone had any experience with this or any suggestions. Thanks!

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systemd vs. autofs/nfs
by David A. De Graaf 02 Aug '16

02 Aug '16

systemd and autofs/nfs are at war and have been ever since systemd appeared. Specifically, if machine A has an open connection to machine B and B goes down or become inaccessible, then A cannot shutdown. A's shutdown sequence hangs, waiting for B to respond to an unmount command, which will not/cannot happen. WAITING WILL NOT HELP. Only a dirty disconnect will work; there's no way to avoid it. Here's what I've tried: - Precede 'shutdown' or 'reboot' or 'systemctl reboot' with umount -fl -t nfs <each nfs-mounted-filesystem> (You might expect a forced lazy umount to do the job. It doesn't work; umount just hangs) - Change nfs mount option to 'soft' instead of 'hard'. Edit /etc/nfsmount.conf to say: Hard=False Soft=True (This did change the autofs/nfs mount option, but didn't improve the tolerance for a dirty disconnect. Shutdown still hangs.) - Reduce systemd's timeout values from 90 to 10 sec; edit /etc/systemd/system.conf to say: DefaultTimeoutStartSec=10s DefaultTimeoutStopSec=10s (During shutdown, systemd displays two times; the time it has waited for an unmount event, and the time limit to wait. Incomprehensibly, when the time limit is reached, it bumps it up and continues to wait. Changing the default timeout values seems to accelerate this recycling, but doesn't do anything for the actual time limit.) - Change the nfs timeout from 600 (default) to 20 decisec to reduce the time nfs waits for any response, including umount, before declaring a timeout. Edit /etc/nfsmount.conf to say: # Timeo=600 Timeo=20 (The option displayed by the mount command did change, but it did not help the shutdown hangup.) - That leaves ONLY TWO WAYS to shutdown machine A, both ugly: SysReq R E I S U B - which forces a reboot NOW Hold the Power button - which just stops everything. This is NOT NEW. Systemd has had this design defect from day one. SysV never hung on shutdown. It Just Knew when a dirty disconnect was the only viable way and handled it. How many more years must we wait? Have I overlooked something obvious? Is there a way to make systemd perform the simple function 'shutdown' smoothly, reliably and quickly? If anyone knows how, I would love to hear it. -- David A. De Graaf DATIX, Inc. Hendersonville, NC dad(a)datix.us www.datix.us "Tolerance becomes a crime when applied to evil." -- Thomas Mann

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