On 1/19/06, Helmut Toplitzer <[EMAIL PROTECTED]> wrote: > > Ok. I found another possible reason, did I? > > I read in several forums that HLT in KT333 chipsets > of VIA is not enough to get the processor in powersafe > and to disconnect from the FSB. You need to issuse > the STPGNT command which also needs first > to set some registers (because it degrades overall performance and > so it's normaly disabled by BIOS). > http://www.planet3dnow.de/vbulletin/archive/index.php/t-80854.html > (German) > > It's called "Disconnect Enable when STPGNT Detected". And may cause > other problems like sound distortion etc. because of high fluctuation > in power current. > > There should also be a simmilar register for the HLT command. ???
HALT == HLT > http://www.rhcf.com/sis-bin/ultimatebb.cgi?ubb=get_topic;f=7;t=000078;p=0 > VIA KT266/KT266A/KM266/KM266A/KT333 > Rx92[bit 7 – enable] = Disconnect Enable When STPGNT Detected > Rx95[bit 1 – enable] = HALT Command Detect > offset 92 set to E8 or E9 > > VIA KT333CF/KT400/KT400A/KM400/KM400A/KT600 > RxD2[bit 7 – enable] = Disconnect Enable When STPGNT Detected > RxD5[bit 1 – enable] = HALT Command Detect > offset D2 set to E8 or E9 > > Does this help? Yes, this mail explains it more: http://www.uwsg.iu.edu/hypermail/linux/kernel/0207.0/0004.html If "HALT Command Detect is enabled" is enabled STPGNT is issued on detection of HALT command. If "Disconnect Enable When STPGNT Detect" is enabled bus disconnect is done on detection of STPGNT command. Now lets see which setting is to blame... Could you send full output of "lspci -vvv -xxx" command? Bartlomiej
