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Hi, |
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I've just recently (the last 4 or 5 days) been experiencing some |
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lock-ups on Firefox. As far as I can tell these seem to come only when |
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visiting certain web pages that have more multimedia content. When |
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Firefox locks up it can be killed from a terminal and restarted. There |
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are no messages in dmesg or /var/log/messages. |
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|
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In reviewing changes recently made I noted that the newest thing, |
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for me, was changing some USE flags. What I thought I was doing was |
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better matching the processor in each machine but possibly this is |
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causing the problem. |
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|
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On my laptop, a P4 / ATI machine, I went about it like this: |
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|
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flash ~ # cat /proc/cpuinfo |
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processor : 0 |
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vendor_id : GenuineIntel |
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cpu family : 15 |
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model : 2 |
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model name : Mobile Intel(R) Pentium(R) 4 CPU 3.06GHz |
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stepping : 9 |
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cpu MHz : 3067.965 |
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cache size : 512 KB |
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fdiv_bug : no |
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hlt_bug : no |
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f00f_bug : no |
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coma_bug : no |
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fpu : yes |
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fpu_exception : yes |
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cpuid level : 2 |
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wp : yes |
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flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge |
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mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid |
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xtpr |
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bogomips : 6078.46 |
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|
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flash ~ # |
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|
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I then looked for CPU flags that had an equivalent USE flag and that |
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might be of use for faster graphics. On this machine I chose mmx, sse |
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& sse2. Armed with that I changed my make.conf file to look like this: |
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|
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# These settings were set by the catalyst build script that |
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automatically built this stage |
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CFLAGS="-O2 -march=pentium4 -pipe -fomit-frame-pointer" |
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CHOST="i686-pc-linux-gnu" |
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USE="mmx sse sse2 gnome kde -arts ladspa nptl nptlonly ladcca |
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audiofile gimp gimpprint ppds usb alsa cdr dvd dvdr dvdread caps jack |
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jack-tmpfs fluidsynth tcltk sndfile v4l v4l2 mysql flac xscreensaver |
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samba i8x0 mythtv apache2 lirc mjpeg xvid real" |
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CXXFLAGS="${CFLAGS}" |
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MAKEOPTS="-j2" |
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GENTOO_MIRRORS="http://mirror.tucdemonic.org/gentoo/ |
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ftp://ftp.gtlib.cc.gatech.edu/pub/gentoo http://mirror.gentoo.gr.jp |
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http://www.zentek-international.com/mirrors/gentoo/" |
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ALSA_CARDS="atiixp" |
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VIDEO_CARDS="radeon" |
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PORTDIR_OVERLAY=/usr/local/portage |
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|
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I should note that I only remember adding sse2. mmx and sse where |
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there before and I had no problems. |
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|
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QUESTION 1: Is this the right way to go about doing this sort of |
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thing? Or are the CPU flags supposed to become part of the CFLAGS line |
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also? |
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|
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QUESTION 2: Are there any known problems with sse2 support? I think |
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I've added this on 3 machines and all 3 machines have experienced at |
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least one, if not more, lockups. |
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|
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Certainly I can just remove the sse2 flag and recompile but I thought |
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I'd ask first. |
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|
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Thanks, |
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Mark |
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|
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-- |
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