User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2) Gecko/20100125 Mandriva Linux/1.9.2-2mdv2010.1 (2010.1) Firefox/3.6 Build Identifier: 20090624012820 I'm observing a weird behaviour with the focus when embedding a flash plugin into the web page. Sometimes the focus goes to the browser, someothers it goes to the plugin. ***The bug is related to the hiperthreading since once I disable it in the BIOS the problem disapears.*** I'm using an Intel Atom for testing. /proc/cpuinfo returns: 1 processor : 0 2 vendor_id : GenuineIntel 3 cpu family : 6 4 model : 28 5 model name : Intel(R) Atom(TM) CPU 230 @ 1.60GHz 6 stepping : 2 7 cpu MHz : 1599.713 8 cache size : 512 KB 9 physical id : 0 10 siblings : 1 11 core id : 0 12 cpu cores : 1 13 apicid : 0 14 initial apicid : 0 15 fdiv_bug : no 16 hlt_bug : no 17 f00f_bug : no 18 coma_bug : no 19 fpu : yes 20 fpu_exception : yes 21 cpuid level : 10 22 wp : yes 23 flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc up arch_perfmon pebs bts pni dtes64 monitor ds_cpl tm2 ssse3 cx16 xtpr pdcm lahf_lm 24 bogomips : 3199.42 25 clflush size : 64 26 power management: Browsing on the Wikipedia it looks hiperthreading share the same internal cache, just the Architectural state (http://en.wikipedia.org/wiki/Architectural_state) is different for each thread, so I guess it must be an int or long variable used as a lock or counter or something like that to be blamed for this bug. (an "small piece of data" that the compiler is able to put into a CPU register that has not been properly protected for simultaneaus thread access). Reproducible: Sometimes Steps to Reproduce: 1.Activate hiperthreading in BIOS. 2.Load an html page with some flash videos and put focus into an input box. Actual Results: Sometimes I can start typing text into the input box. Some others I have to manually use the mouse to put the focus the into the input box. Expected Results: Focus have to go always to the input box, not to the flash plugin. http://en.wikipedia.org/wiki/Hyper-Threading
I'm using matchbox-window-manager. I'm not sure who is to blame, Firefox, the wm or maybe the Xorg server. I put that same bug repport in the openhand.com bugzilla system: http://bugzilla.openedhand.com/show_bug.cgi?id=1984
Works for me - Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.3a5pre) Gecko/20100602 Minefield/3.7a5pre - Flash 10.0 r45 x64. Tried several Youtube videos as well as some Vimeo pages. Could not reproduce. Is there a specific page that this happens on? Is the text box inside the flash object or elsewhere on the page?
Resolving old bugs which are likely not relevant any more, since NPAPI plugins are deprecated.
Status: UNCONFIRMED → RESOLVED
Last Resolved: a year ago
Resolution: --- → INCOMPLETE
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