From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 05112C77B7C for ; Tue, 9 May 2023 06:50:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235025AbjEIGtv (ORCPT ); Tue, 9 May 2023 02:49:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52532 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235041AbjEIGto (ORCPT ); Tue, 9 May 2023 02:49:44 -0400 Received: from desiato.infradead.org (desiato.infradead.org [IPv6:2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9D86810EA; Mon, 8 May 2023 23:49:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=PbZUIlEwLxdApfWlTodlcMm6K5WCErVJpDX/q+SYV/o=; b=P6C0II8T3ToIDwdqzyhUAGJI/D ZCNC7WWDlvhvS9TP8hS5heFGY2y1fn4CvmpBwZRLK/SUhz7LqJX/4Qa45fz11oJU8k/AMFOhAHEr3 +EWXJyg4O3XLRiADhyF/ipdHNeGii9lWT9BzHXZHp5pkptpBYBW632Ra0BctIfX/yhlj0k+Agmbuu LnutvhNKYS+hmxC+61WS22dWlvIlP1iAdbPbzVHNi/48lEfafUa14tSUupbJbAoyuFdZn3h3yMAsC ibLMeiZxLLk++miuJUDtabe5m1vwyoCbIE9NkFMB3XCQMNvk3dPsbTLKInjxivBc8zcfYlbVarwGF n4DvmLgg==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1pwHA6-0060xC-0Z; Tue, 09 May 2023 06:49:26 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 04BA530026A; Tue, 9 May 2023 08:49:25 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id E121A2B0DE80F; Tue, 9 May 2023 08:49:24 +0200 (CEST) Date: Tue, 9 May 2023 08:49:24 +0200 From: Peter Zijlstra To: Corentin Labbe Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, pjones@redhat.com, deller@gmx.de, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: Cannot boot an i386-UEFI thinkpad lenovo tablet-2 Message-ID: <20230509064924.GB2065796@hirez.programming.kicks-ass.net> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org On Tue, May 09, 2023 at 08:29:50AM +0200, Corentin Labbe wrote: > The bios speak about a debug port, but I found nothing which seems a > physical debug port output. I tried to wire the microusb power port > on a USB host, but the host fail to enumerate any device (I tried also > a spetial USB cable with data/power separated to be sure the problem > was not the host failling to give enough power) > > The tablet has only one port, so I use a hub for keyboard and USB key. USB debug port is probably that one port, USB debug also does not work through a hub :/ USB debug in general is a giant pain in the rear and I've never had much luck with is. If it's that old to still need a i386 kernel then it's probably USB2 at best and that requires a special magical cable too :-(