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[2001:1c00:c0c:fe00:7e79:4dac:39d0:9c14]) by smtp.gmail.com with ESMTPSA id f17sm7562451wmc.8.2019.12.12.12.51.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 12 Dec 2019 12:51:33 -0800 (PST) Subject: =?UTF-8?B?UmU6INCy0L7Qv9GA0L7RgSDQv9C+IHN1c3BlbmQvcmVzdW1lINCyIGdv?= =?UTF-8?Q?odix?= To: Dmitry Torokhov , Dmitry Mastykin , Bastien Nocera Cc: linux-input@vger.kernel.org References: <20191212192009.GB101194@dtor-ws> From: Hans de Goede Message-ID: Date: Thu, 12 Dec 2019 21:51:32 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <20191212192009.GB101194@dtor-ws> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Hi, On 12-12-2019 20:20, Dmitry Torokhov wrote: > Hi Dmitry, > > On Thu, Dec 12, 2019 at 06:34:46PM +0300, Dmitry Mastykin wrote: >> Здравствуйте, Дмитрий. >> Простите, что отвлекаю, если что - не отвечайте и в лучшем случае >> пошлите в mail-list) >> У меня есть планшет с x86, вариантом Debian с ядром 4.15 и >> контроллером тач-скрина gt928. > > What is the model of the tablet? > >> После suspend/resume не всегда, но очень часто тачскрин перестает >> работать и постоянно выводит: >> [ 3276.729412] Goodix-TS i2c-GDIX1002:00: I2C write end_cmd error >> [ 3276.770153] Goodix-TS i2c-GDIX1002:00: I2C transfer error: -121 > > When this happens, are these messages appear constantly, or only in > response to actual touch? Can you still interact with the device? > > Could you please send the full dmesg so we know more about the device. > > Hans, Bastien, have you seen such issues with Goodix occasionally > misbehaving on resume? We have reports of the touchscreen no longer working after suspend/resume on some GPD pocket devices, but not combined with these errors. Regards, Hans > >> По i2cget/i2cset контроллер успешно отвечает. > > The fact that you can talk to the controller like that is interesting. > Just to confirm, does it return sane data, or garbage? > > Thanks. >