{"product_id":"asus-xc-ls3a6m-4-core-motherboard","title":"ASUS XC-LS3A6M 3A6000 4-Core Motherboard","description":"\u003cdiv class=\"info custom-block\"\u003e\n\u003cp\u003eThe ASUS XC-LS3A6M is a DTX (203×244mm) desktop motherboard based on Loongson 3A6000-HV.\u003c\/p\u003e\n\u003cp\u003eThis motherboard was designed and sold by ASUS and is one of the first third-party Loongson 3A6000 motherboards. The motherboard is known for its overclocking support, dual network ports, and additional onboard USB 3.0 ports.\u003c\/p\u003e\n\u003ch1\u003eKnown Issues\u003c\/h1\u003e\n\u003cdiv class=\"main\"\u003e\n\u003cdiv class=\"body_content\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"tabs\"\u003e\n\u003cdiv class=\"p-tabs p-component\"\u003e\n\u003cdiv class=\"p-tabpanels\" role=\"presentation\"\u003e\n\u003cdiv class=\"p-tabpanel p-tabpanel-active\" id=\"pv_id_44_tabpanel_known-issues\" role=\"tabpanel\" tabindex=\"0\"\u003e\n\u003ch3 id=\"_7a-bridge-instability\" tabindex=\"-1\"\u003e7A Bridge Instability\u003c\/h3\u003e\n\u003cp\u003eMotherboards that uses the 7A2000 bridge chip to provide PCIe interface are known to be unstable with certain peripherals (especially AMD graphics cards based on the GCN 1.0 - 4.0 architectures). Users of these graphics cards may see driver instabilities, graphical glitches, application crashes, or even lock ups. The cause behind this issue is yet to be confirmed.\u003c\/p\u003e\n\u003cp\u003eAt present, some Linux distros includes workarounds for this issue, which improves the situation significantly, but we still see occasional user complaints.\u003c\/p\u003e\n\u003cp\u003eIf you have ran into situations like this, improving cooling on the bridge chip is also known to lessen the symptom.\u003c\/p\u003e\n\u003ch3 id=\"usb-devices-lost-on-startup\" tabindex=\"-1\"\u003eUSB Devices Lost on Startup\u003c\/h3\u003e\n\u003cp\u003eSome users reported that their USB keyboards and mice may stop working after system startup, and repeated plugging in\/out may be needed before they function again.\u003c\/p\u003e\n\u003cp\u003eAccording to investigation by an engineer at Loongson Technology, this was caused by a \u003ca href=\"https:\/\/github.com\/torvalds\/linux\/commit\/bcb60d438547355b8f9ad48645909139b64d3482\" rel=\"noreferrer\" target=\"_blank\"\u003ehardware flaw in the Loongson 7A2000 bridge chip\u003c\/a\u003e. A workaround for this issue has been included since Linux 6.15-rc1, commercial distros based on the Linux 6.6 (ABI20.) or 4.19 (ABI1.0) kernels also include this workaround.\u003c\/p\u003e\n\u003ch3 id=\"lack-of-firmware-update\" tabindex=\"-1\"\u003eLack of Firmware Update\u003c\/h3\u003e\n\u003cp\u003eAccording to user feedback, this motherboard sees few firmware updates and there are multiple known firmware bugs:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEarly firmware lacked the option to turn off x86 UEFI GOP emulation for GPUs, causing newer AMD graphics cards (RX 5000 and above) and Intel discrete graphics cards to be unusable.\u003c\/li\u003e\n\u003cli\u003eSome firmware versions do not output a display signal from discrete graphics cards, while the onboard HDMI output (7A2000) only displays a cursor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ehttps:\/\/loongfans.cn\/en\/devices\/asus-xc-ls3a6m\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"child_footer_info footer\"\u003e\n\u003cdiv class=\"child_footer_link\"\u003e\u003cbutton type=\"button\" class=\"language-button\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"1em\" height=\"1em\"\u003e\u003cpath fill=\"currentColor\" d=\"m11.9 22l4.55-12h2.1l4.55 12H21l-1.075-3.05h-4.85L14 22zM4 19l-1.4-1.4l5.05-5.05q-.875-.875-1.588-2T4.75 8h2.1q.5.975 1 1.7t1.2 1.45q.825-.825 1.713-2.313T12.1 6H1V4h7V2h2v2h7v2h-2.9q-.525 1.8-1.575 3.7t-2.075 2.9l2.4 2.45l-.75 2.05l-3.05-3.125zm11.7-1.8h3.6l-1.8-5.1z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/button\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Valor Computing Systems","offers":[{"title":"Default Title","offer_id":48499852280053,"sku":null,"price":400.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0815\/3350\/1685\/files\/S22a42c9d077b4b1c9efae97bc70cac8eu.avif?v=1785647886","url":"https:\/\/valorcomputingsystems.com\/products\/asus-xc-ls3a6m-4-core-motherboard","provider":"Valor Computing Systems","version":"1.0","type":"link"}